diff --git a/assets/js/jquery.bootstrap.js b/assets/js/jquery.bootstrap.js
index f190da0..4905123 100755
--- a/assets/js/jquery.bootstrap.js
+++ b/assets/js/jquery.bootstrap.js
@@ -1,7 +1,7 @@
 /*!
  * jQuery twitter bootstrap wizard plugin
  * Examples and documentation at: http://github.com/VinceG/twitter-bootstrap-wizard
- * version 1.0
+ * version 1.4.2
  * Requires jQuery v1.3.2 or later
  * Supports Bootstrap 2.2.x, 2.3.x, 3.0
  * Dual licensed under the MIT and GPL licenses:
@@ -10,279 +10,342 @@
  * Authors: Vadim Vincent Gabriel (http://vadimg.com), Jason Gill (www.gilluminate.com)
  */
 ;(function($) {
-var bootstrapWizardCreate = function(element, options) {
-	var element = $(element);
-	var obj = this;
-
-	// selector skips any 'li' elements that do not contain a child with a tab data-toggle
-	var baseItemSelector = 'li:has([data-toggle="tab"])';
-
-	// Merge options with defaults
-	var $settings = $.extend({}, $.fn.bootstrapWizard.defaults, options);
-	var $activeTab = null;
-	var $navigation = null;
-
-	this.rebindClick = function(selector, fn)
-	{
-		selector.unbind('click', fn).bind('click', fn);
-	}
-
-	this.fixNavigationButtons = function() {
-		// Get the current active tab
-		if(!$activeTab.length) {
-			// Select first one
-			$navigation.find('a:first').tab('show');
-			$activeTab = $navigation.find(baseItemSelector + ':first');
-		}
-
-		// See if we're currently in the first/last then disable the previous and last buttons
-		$($settings.previousSelector, element).toggleClass('disabled', (obj.firstIndex() >= obj.currentIndex()));
-		$($settings.nextSelector, element).toggleClass('disabled', (obj.currentIndex() >= obj.navigationLength()));
-
-		// We are unbinding and rebinding to ensure single firing and no double-click errors
-		obj.rebindClick($($settings.nextSelector, element), obj.next);
-		obj.rebindClick($($settings.previousSelector, element), obj.previous);
-		obj.rebindClick($($settings.lastSelector, element), obj.last);
-		obj.rebindClick($($settings.firstSelector, element), obj.first);
-
-		if($settings.onTabShow && typeof $settings.onTabShow === 'function' && $settings.onTabShow($activeTab, $navigation, obj.currentIndex())===false){
-			return false;
-		}
-	};
-
-	this.next = function(e) {
-
-		// If we clicked the last then dont activate this
-		if(element.hasClass('last')) {
-			return false;
-		}
-
-		if($settings.onNext && typeof $settings.onNext === 'function' && $settings.onNext($activeTab, $navigation, obj.nextIndex())===false){
-			return false;
-		}
-
-		// Did we click the last button
-		$index = obj.nextIndex();
-		if($index > obj.navigationLength()) {
-		} else {
-			$navigation.find(baseItemSelector + ':eq('+$index+') a').tab('show');
-		}
-	};
-
-	this.previous = function(e) {
-
-		// If we clicked the first then dont activate this
-		if(element.hasClass('first')) {
-			return false;
-		}
-
-		if($settings.onPrevious && typeof $settings.onPrevious === 'function' && $settings.onPrevious($activeTab, $navigation, obj.previousIndex())===false){
-			return false;
-		}
-
-		$index = obj.previousIndex();
-		if($index < 0) {
-		} else {
-			$navigation.find(baseItemSelector + ':eq('+$index+') a').tab('show');
-		}
-	};
-
-	this.first = function(e) {
-		if($settings.onFirst && typeof $settings.onFirst === 'function' && $settings.onFirst($activeTab, $navigation, obj.firstIndex())===false){
-			return false;
-		}
-
-		// If the element is disabled then we won't do anything
-		if(element.hasClass('disabled')) {
-			return false;
-		}
-		$navigation.find(baseItemSelector + ':eq(0) a').tab('show');
-
-	};
-	this.last = function(e) {
-		if($settings.onLast && typeof $settings.onLast === 'function' && $settings.onLast($activeTab, $navigation, obj.lastIndex())===false){
-			return false;
-		}
-
-		// If the element is disabled then we won't do anything
-		if(element.hasClass('disabled')) {
-			return false;
-		}
-		$navigation.find(baseItemSelector + ':eq('+obj.navigationLength()+') a').tab('show');
-	};
-	this.currentIndex = function() {
-		return $navigation.find(baseItemSelector).index($activeTab);
-	};
-	this.firstIndex = function() {
-		return 0;
-	};
-	this.lastIndex = function() {
-		return obj.navigationLength();
-	};
-	this.getIndex = function(e) {
-		return $navigation.find(baseItemSelector).index(e);
-	};
-	this.nextIndex = function() {
-		return $navigation.find(baseItemSelector).index($activeTab) + 1;
-	};
-	this.previousIndex = function() {
-		return $navigation.find(baseItemSelector).index($activeTab) - 1;
-	};
-	this.navigationLength = function() {
-		return $navigation.find(baseItemSelector).length - 1;
-	};
-	this.activeTab = function() {
-		return $activeTab;
-	};
-	this.nextTab = function() {
-		return $navigation.find(baseItemSelector + ':eq('+(obj.currentIndex()+1)+')').length ? $navigation.find(baseItemSelector + ':eq('+(obj.currentIndex()+1)+')') : null;
-	};
-	this.previousTab = function() {
-		if(obj.currentIndex() <= 0) {
-			return null;
-		}
-		return $navigation.find(baseItemSelector + ':eq('+parseInt(obj.currentIndex()-1)+')');
-	};
-	this.show = function(index) {
-		if (isNaN(index)) {
-			return element.find(baseItemSelector + ' a[href=#' + index + ']').tab('show');
-		}
-		else {
-			return element.find(baseItemSelector + ':eq(' + index + ') a').tab('show');
-		}
-	};
-	this.disable = function(index) {
-		$navigation.find(baseItemSelector + ':eq('+index+')').addClass('disabled');
-	};
-	this.enable = function(index) {
-		$navigation.find(baseItemSelector + ':eq('+index+')').removeClass('disabled');
-	};
-	this.hide = function(index) {
-		$navigation.find(baseItemSelector + ':eq('+index+')').hide();
-	};
-	this.display = function(index) {
-		$navigation.find(baseItemSelector + ':eq('+index+')').show();
-	};
-	this.remove = function(args) {
-		var $index = args[0];
-		var $removeTabPane = typeof args[1] != 'undefined' ? args[1] : false;
-		var $item = $navigation.find(baseItemSelector + ':eq('+$index+')');
-
-		// Remove the tab pane first if needed
-		if($removeTabPane) {
-			var $href = $item.find('a').attr('href');
-			$($href).remove();
-		}
-
-		// Remove menu item
-		$item.remove();
-	};
-
-	var innerTabClick = function (e) {
-		// Get the index of the clicked tab
-		var clickedIndex = $navigation.find(baseItemSelector).index($(e.currentTarget).parent(baseItemSelector));
-		if($settings.onTabClick && typeof $settings.onTabClick === 'function' && $settings.onTabClick($activeTab, $navigation, obj.currentIndex(), clickedIndex)===false){
-			return false;
-		}
-	};
-
-	var innerTabShown = function (e) {  // use shown instead of show to help prevent double firing
-		$element = $(e.target).parent();
-		var nextTab = $navigation.find(baseItemSelector).index($element);
-
-		// If it's disabled then do not change
-		if($element.hasClass('disabled')) {
-			return false;
-		}
-
-		if($settings.onTabChange && typeof $settings.onTabChange === 'function' && $settings.onTabChange($activeTab, $navigation, obj.currentIndex(), nextTab)===false){
-				return false;
-		}
-
-		$activeTab = $element; // activated tab
-		obj.fixNavigationButtons();
-	};
-
-	this.resetWizard = function() {
-
-		// remove the existing handlers
-		$('a[data-toggle="tab"]', $navigation).off('click', innerTabClick);
-		$('a[data-toggle="tab"]', $navigation).off('shown shown.bs.tab', innerTabShown);
-
-		// reset elements based on current state of the DOM
-		$navigation = element.find('ul:first', element);
-		$activeTab = $navigation.find(baseItemSelector + '.active', element);
-
-		// re-add handlers
-		$('a[data-toggle="tab"]', $navigation).on('click', innerTabClick);
-		$('a[data-toggle="tab"]', $navigation).on('shown shown.bs.tab', innerTabShown);
-
-		obj.fixNavigationButtons();
-	};
-
-	$navigation = element.find('ul:first', element);
-	$activeTab = $navigation.find(baseItemSelector + '.active', element);
-
-	if(!$navigation.hasClass($settings.tabClass)) {
-		$navigation.addClass($settings.tabClass);
-	}
-
-	// Load onInit
-	if($settings.onInit && typeof $settings.onInit === 'function'){
-		$settings.onInit($activeTab, $navigation, 0);
-	}
-
-	// Load onShow
-	if($settings.onShow && typeof $settings.onShow === 'function'){
-		$settings.onShow($activeTab, $navigation, obj.nextIndex());
-	}
-
-	$('a[data-toggle="tab"]', $navigation).on('click', innerTabClick);
-
-	// attach to both shown and shown.bs.tab to support Bootstrap versions 2.3.2 and 3.0.0
-	$('a[data-toggle="tab"]', $navigation).on('shown shown.bs.tab', innerTabShown);
-};
-$.fn.bootstrapWizard = function(options) {
-	//expose methods
-	if (typeof options == 'string') {
-		var args = Array.prototype.slice.call(arguments, 1)
-		if(args.length === 1) {
-			args.toString();
-		}
-		return this.data('bootstrapWizard')[options](args);
-	}
-	return this.each(function(index){
-		var element = $(this);
-		// Return early if this element already has a plugin instance
-		if (element.data('bootstrapWizard')) return;
-		// pass options to plugin constructor
-		var wizard = new bootstrapWizardCreate(element, options);
-		// Store plugin object in this element's data
-		element.data('bootstrapWizard', wizard);
-		// and then trigger initial change
-		wizard.fixNavigationButtons();
-	});
-};
-
-// expose options
-$.fn.bootstrapWizard.defaults = {
-	tabClass:         'nav nav-pills',
-	nextSelector:     '.wizard li.next',
-	previousSelector: '.wizard li.previous',
-	firstSelector:    '.wizard li.first',
-	lastSelector:     '.wizard li.last',
-	onShow:           null,
-	onInit:           null,
-	onNext:           null,
-	onPrevious:       null,
-	onLast:           null,
-	onFirst:          null,
-	onTabChange:      null,
-	onTabClick:       null,
-	onTabShow:        null
-};
-
-})(jQuery);
+    var bootstrapWizardCreate = function(element, options) {
+        var element = $(element);
+        var obj = this;
+
+        // selector skips any 'li' elements that do not contain a child with a tab data-toggle
+        var baseItemSelector = 'li:has([data-toggle="tab"])';
+        var historyStack = [];
+
+        // Merge options with defaults
+        var $settings = $.extend({}, $.fn.bootstrapWizard.defaults, options);
+        var $activeTab = null;
+        var $navigation = null;
+
+        this.rebindClick = function(selector, fn)
+        {
+            selector.unbind('click', fn).bind('click', fn);
+        }
+
+        this.fixNavigationButtons = function() {
+            // Get the current active tab
+            if(!$activeTab.length) {
+                // Select first one
+                $navigation.find('a:first').tab('show');
+                $activeTab = $navigation.find(baseItemSelector + ':first');
+            }
+
+            // See if we're currently in the first/last then disable the previous and last buttons
+            $($settings.previousSelector, element).toggleClass('disabled', (obj.firstIndex() >= obj.currentIndex()));
+            $($settings.nextSelector, element).toggleClass('disabled', (obj.currentIndex() >= obj.navigationLength()));
+            $($settings.nextSelector, element).toggleClass('hidden', (obj.currentIndex() >= obj.navigationLength() && $($settings.finishSelector, element).length > 0));
+            $($settings.lastSelector, element).toggleClass('hidden', (obj.currentIndex() >= obj.navigationLength() && $($settings.finishSelector, element).length > 0));
+            $($settings.finishSelector, element).toggleClass('hidden', (obj.currentIndex() < obj.navigationLength()));
+            $($settings.backSelector, element).toggleClass('disabled', (historyStack.length == 0));
+            $($settings.backSelector, element).toggleClass('hidden', (obj.currentIndex() >= obj.navigationLength() && $($settings.finishSelector, element).length > 0));
+
+            // We are unbinding and rebinding to ensure single firing and no double-click errors
+            obj.rebindClick($($settings.nextSelector, element), obj.next);
+            obj.rebindClick($($settings.previousSelector, element), obj.previous);
+            obj.rebindClick($($settings.lastSelector, element), obj.last);
+            obj.rebindClick($($settings.firstSelector, element), obj.first);
+            obj.rebindClick($($settings.finishSelector, element), obj.finish);
+            obj.rebindClick($($settings.backSelector, element), obj.back);
+
+            if($settings.onTabShow && typeof $settings.onTabShow === 'function' && $settings.onTabShow($activeTab, $navigation, obj.currentIndex())===false){
+                return false;
+            }
+        };
+
+        this.next = function(e) {
+            // If we clicked the last then dont activate this
+            if(element.hasClass('last')) {
+                return false;
+            }
+
+            if($settings.onNext && typeof $settings.onNext === 'function' && $settings.onNext($activeTab, $navigation, obj.nextIndex())===false){
+                return false;
+            }
+
+            var formerIndex = obj.currentIndex();
+            var $index = obj.nextIndex();
+
+          // Did we click the last button
+            if($index > obj.navigationLength()) {
+            } else {
+              historyStack.push(formerIndex);
+              $navigation.find(baseItemSelector + ($settings.withVisible ? ':visible' : '') + ':eq(' + $index + ') a').tab('show');
+            }
+        };
+
+        this.previous = function(e) {
+            // If we clicked the first then dont activate this
+            if(element.hasClass('first')) {
+                return false;
+            }
+
+            if($settings.onPrevious && typeof $settings.onPrevious === 'function' && $settings.onPrevious($activeTab, $navigation, obj.previousIndex())===false){
+                return false;
+            }
+
+            var formerIndex = obj.currentIndex();
+            var $index = obj.previousIndex();
+
+            if($index < 0) {
+            } else {
+              historyStack.push(formerIndex);
+              $navigation.find(baseItemSelector + ($settings.withVisible ? ':visible' : '') + ':eq(' + $index + ') a').tab('show');
+            }
+        };
+
+        this.first = function (e) {
+            if($settings.onFirst && typeof $settings.onFirst === 'function' && $settings.onFirst($activeTab, $navigation, obj.firstIndex())===false){
+                return false;
+            }
+
+            // If the element is disabled then we won't do anything
+            if(element.hasClass('disabled')) {
+                return false;
+            }
+
+
+            historyStack.push(obj.currentIndex());
+            $navigation.find(baseItemSelector + ':eq(0) a').tab('show');
+        };
+
+        this.last = function(e) {
+            if($settings.onLast && typeof $settings.onLast === 'function' && $settings.onLast($activeTab, $navigation, obj.lastIndex())===false){
+                return false;
+            }
+
+            // If the element is disabled then we won't do anything
+            if(element.hasClass('disabled')) {
+                return false;
+            }
+
+            historyStack.push(obj.currentIndex());
+            $navigation.find(baseItemSelector + ':eq(' + obj.navigationLength() + ') a').tab('show');
+        };
+
+        this.finish = function (e) {
+          if ($settings.onFinish && typeof $settings.onFinish === 'function') {
+            $settings.onFinish($activeTab, $navigation, obj.lastIndex());
+          }
+        };
+
+        this.back = function () {
+          if (historyStack.length == 0) {
+            return null;
+          }
+
+          var formerIndex = historyStack.pop();
+          if ($settings.onBack && typeof $settings.onBack === 'function' && $settings.onBack($activeTab, $navigation, formerIndex) === false) {
+            historyStack.push(formerIndex);
+            return false;
+          }
+
+          element.find(baseItemSelector + ':eq(' + formerIndex + ') a').tab('show');
+        };
+
+        this.currentIndex = function() {
+            return $navigation.find(baseItemSelector + ($settings.withVisible ? ':visible' : '')).index($activeTab);
+        };
+
+        this.firstIndex = function() {
+            return 0;
+        };
+
+        this.lastIndex = function() {
+            return obj.navigationLength();
+        };
+
+        this.getIndex = function(e) {
+            return $navigation.find(baseItemSelector + ($settings.withVisible ? ':visible' : '')).index(e);
+        };
+
+        this.nextIndex = function() {
+            var nextIndexCandidate=this.currentIndex();
+            var nextTabCandidate=null;
+            do {
+                nextIndexCandidate++;
+                nextTabCandidate = $navigation.find(baseItemSelector + ($settings.withVisible ? ':visible' : '') + ":eq(" + nextIndexCandidate + ")");
+            } while ((nextTabCandidate)&&(nextTabCandidate.hasClass("disabled")));
+            return nextIndexCandidate;
+        };
+        this.previousIndex = function() {
+            var prevIndexCandidate=this.currentIndex();
+            var prevTabCandidate=null;
+            do {
+                prevIndexCandidate--;
+                prevTabCandidate = $navigation.find(baseItemSelector + ($settings.withVisible ? ':visible' : '') + ":eq(" + prevIndexCandidate + ")");
+            } while ((prevTabCandidate)&&(prevTabCandidate.hasClass("disabled")));
+            return prevIndexCandidate;
+        };
+        this.navigationLength = function() {
+            return $navigation.find(baseItemSelector + ($settings.withVisible ? ':visible' : '')).length - 1;
+        };
+        this.activeTab = function() {
+            return $activeTab;
+        };
+        this.nextTab = function() {
+            return $navigation.find(baseItemSelector + ':eq('+(obj.currentIndex()+1)+')').length ? $navigation.find(baseItemSelector + ':eq('+(obj.currentIndex()+1)+')') : null;
+        };
+        this.previousTab = function() {
+            if(obj.currentIndex() <= 0) {
+                return null;
+            }
+            return $navigation.find(baseItemSelector + ':eq('+parseInt(obj.currentIndex()-1)+')');
+        };
+        this.show = function(index) {
+          var tabToShow = isNaN(index) ?
+          element.find(baseItemSelector + ' a[href="#' + index + '"]') :
+          element.find(baseItemSelector + ':eq(' + index + ') a');
+          if (tabToShow.length > 0) {
+            historyStack.push(obj.currentIndex());
+            tabToShow.tab('show');
+          }
+        };
+        this.disable = function (index) {
+            $navigation.find(baseItemSelector + ':eq('+index+')').addClass('disabled');
+        };
+        this.enable = function(index) {
+            $navigation.find(baseItemSelector + ':eq('+index+')').removeClass('disabled');
+        };
+        this.hide = function(index) {
+            $navigation.find(baseItemSelector + ':eq('+index+')').hide();
+        };
+        this.display = function(index) {
+            $navigation.find(baseItemSelector + ':eq('+index+')').show();
+        };
+        this.remove = function(args) {
+            var $index = args[0];
+            var $removeTabPane = typeof args[1] != 'undefined' ? args[1] : false;
+            var $item = $navigation.find(baseItemSelector + ':eq('+$index+')');
+
+            // Remove the tab pane first if needed
+            if($removeTabPane) {
+                var $href = $item.find('a').attr('href');
+                $($href).remove();
+            }
+
+            // Remove menu item
+            $item.remove();
+        };
+
+        var innerTabClick = function (e) {
+            // Get the index of the clicked tab
+            var $ul = $navigation.find(baseItemSelector);
+            var clickedIndex = $ul.index($(e.currentTarget).parent(baseItemSelector));
+            var $clickedTab = $( $ul[clickedIndex] );
+            if($settings.onTabClick && typeof $settings.onTabClick === 'function' && $settings.onTabClick($activeTab, $navigation, obj.currentIndex(), clickedIndex, $clickedTab)===false){
+                return false;
+            }
+        };
+
+        var innerTabShown = function (e) {
+            var $element = $(e.target).parent();
+            var nextTab = $navigation.find(baseItemSelector).index($element);
+
+            // If it's disabled then do not change
+            if($element.hasClass('disabled')) {
+                return false;
+            }
+
+            if($settings.onTabChange && typeof $settings.onTabChange === 'function' && $settings.onTabChange($activeTab, $navigation, obj.currentIndex(), nextTab)===false){
+                    return false;
+            }
+
+            $activeTab = $element; // activated tab
+            obj.fixNavigationButtons();
+        };
+
+        this.resetWizard = function() {
+
+            // remove the existing handlers
+            $('a[data-toggle="tab"]', $navigation).off('click', innerTabClick);
+            $('a[data-toggle="tab"]', $navigation).off('show show.bs.tab', innerTabShown);
+
+            // reset elements based on current state of the DOM
+            $navigation = element.find('ul:first', element);
+            $activeTab = $navigation.find(baseItemSelector + '.active', element);
+
+            // re-add handlers
+            $('a[data-toggle="tab"]', $navigation).on('click', innerTabClick);
+            $('a[data-toggle="tab"]', $navigation).on('show show.bs.tab', innerTabShown);
+
+            obj.fixNavigationButtons();
+        };
+
+        $navigation = element.find('ul:first', element);
+        $activeTab = $navigation.find(baseItemSelector + '.active', element);
+
+        if(!$navigation.hasClass($settings.tabClass)) {
+            $navigation.addClass($settings.tabClass);
+        }
+
+        // Load onInit
+        if($settings.onInit && typeof $settings.onInit === 'function'){
+            $settings.onInit($activeTab, $navigation, 0);
+        }
+
+        // Load onShow
+        if($settings.onShow && typeof $settings.onShow === 'function'){
+            $settings.onShow($activeTab, $navigation, obj.nextIndex());
+        }
+
+        $('a[data-toggle="tab"]', $navigation).on('click', innerTabClick);
+
+        // attach to both show and show.bs.tab to support Bootstrap versions 2.3.2 and 3.0.0
+        $('a[data-toggle="tab"]', $navigation).on('show show.bs.tab', innerTabShown);
+    };
+    $.fn.bootstrapWizard = function(options) {
+        //expose methods
+        if (typeof options == 'string') {
+            var args = Array.prototype.slice.call(arguments, 1)
+            if(args.length === 1) {
+                args.toString();
+            }
+            return this.data('bootstrapWizard')[options](args);
+        }
+        return this.each(function(index){
+            var element = $(this);
+            // Return early if this element already has a plugin instance
+            if (element.data('bootstrapWizard')) return;
+            // pass options to plugin constructor
+            var wizard = new bootstrapWizardCreate(element, options);
+            // Store plugin object in this element's data
+            element.data('bootstrapWizard', wizard);
+            // and then trigger initial change
+            wizard.fixNavigationButtons();
+        });
+    };
+
+    // expose options
+    $.fn.bootstrapWizard.defaults = {
+        withVisible:      true,
+        tabClass:         'nav nav-pills',
+        nextSelector:     '.wizard li.next',
+        previousSelector: '.wizard li.previous',
+        firstSelector:    '.wizard li.first',
+        lastSelector:     '.wizard li.last',
+      finishSelector:   '.wizard li.finish',
+        backSelector:     '.wizard li.back',
+        onShow:           null,
+        onInit:           null,
+        onNext:           null,
+        onPrevious:       null,
+        onLast:           null,
+        onFirst:          null,
+      onFinish:         null,
+      onBack:           null,
+        onTabChange:      null,
+        onTabClick:       null,
+        onTabShow:        null
+    };
+
+    })(jQuery);
+
 
 
 //  Material Design Core Functions