Added Product Catalog and Settings menu in pro upgrade class

Signed-off-by: Tareq Hasan <tareq1988@gmail.com>

Author: tareq1988

assets/css/style.css

@@ -1,6 +1,6 @@
 /*
 Woocommerce-Conversion-Tracking - v1.0.0
-Generated: 2018-02-20 (1519108668998)
+Generated: 2018-02-20 (1519126580166)
 PLEASE DO NOT MODIFY*/
 .wcct-admin {
   /**
@@ -10,6 +10,9 @@ PLEASE DO NOT MODIFY*/
      * Sidebar Area
      */
 }
+.wcct-admin .nav-tab.disabled {
+  color: #b1b1b1;
+}
 .wcct-admin .wcct-two-column {
   display: flex;
 }

assets/less/style.less

@@ -2,6 +2,10 @@
 
 .wcct-admin {
 
+    .nav-tab.disabled {
+        color: #b1b1b1;
+    }
+
     .wcct-two-column {
         display: flex;
 

includes/class-admin.php

@@ -94,7 +94,12 @@ public function show_navigation() {
         $html = '<h2 class="nav-tab-wrapper">';
         foreach ( $tabs as $tab ) {
             $active_class   = ( $tab['id'] == $active ) ? 'nav-tab-active' : '';
-            $html  .= sprintf( '<a href="admin.php?page=conversion-tracking&tab=%s" class="nav-tab %s">%s</a>', $tab['id'], $active_class, $tab['title'] );
+
+            if ( !empty( $tab['id'] ) ) {
+                $html  .= sprintf( '<a href="admin.php?page=conversion-tracking&tab=%s" class="nav-tab %s">%s</a>', $tab['id'], $active_class, $tab['title'] );
+            } else {
+                $html  .= sprintf( '<a href="#" class="nav-tab disabled">%s</a>', $tab['title'] );
+            }
         }
 
         $html   .= '</h2>';

includes/class-integration-pro-features.php

@@ -14,6 +14,8 @@ function __construct() {
         add_filter( 'wcct_settings_adwords', array( $this, 'adwords_pro_features' ), 10, 1 );
         add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_script' ) );
 
+        add_filter( 'wcct_nav_tab', array( $this, 'pro_tabs' ) );
+
         add_action( 'wcct_sidebar', array( $this, 'profeature_ad' ) );
     }
 
@@ -23,6 +25,28 @@ public function enqueue_script() {
 
     }
 
+    /**
+     * Add facebook product catalog tab
+     *
+     * @param  array $sections
+     *
+     * @return array
+     */
+    public function pro_tabs( $sections ) {
+
+        $sections[] = array(
+            'id'    => '',
+            'title' => __( 'Facebook Product Catalog (Pro)', 'woocommerce-conversion-tracking' ),
+        );
+
+        $sections[] = array(
+            'id'    => '',
+            'title' => __( 'Settings (Pro)', 'woocommerce-conversion-tracking' ),
+        );
+
+        return $sections;
+    }
+
     /**
      * Displaying facebook pro-features
      *