Fix 2014 project reference to ExpressiomnEditor, wrong major version. Adding some 2014 referenced assemblies. Spelling in commet for FindVariables. Minor path reference fix for 2016 project

Author: sqlgreen

DLLs/SQL2014/References/Microsoft.DataTransformationServices.Controls.dll

@@ -720,7 +720,7 @@
       <Private>False</Private>
     </Reference>
     <Reference Include="Microsoft.DataTransformationServices.Design">
-      <HintPath>DLLs\SQL2016\References\\Microsoft.DataTransformationServices.Design.DLL</HintPath>
+      <HintPath>DLLs\SQL2016\References\Microsoft.DataTransformationServices.Design.DLL</HintPath>
       <Private>False</Private>
     </Reference>
     <Reference Include="Microsoft.DataTransformationServices.VsIntegration">

DLLs/SQL2014/References/Microsoft.DataTransformationServices.Design.DLL

@@ -765,7 +765,7 @@ protected virtual void OnRaiseVariableFound(VariableFoundEventArgs e)
 
         private void CheckExecuteSQLTask(TaskHost taskHost, TreeNode parent)
         {
-            // Use reflection yo examine parameter and result binding collections, so that we avoid a direct reference to the assembly
+            // Use reflection to examine parameter and result binding collections, so that we avoid a direct reference to the assembly
             // That causes issues when changing target versions in VS 2015 and SQL 2016 (OneDesigner) tools
             // Could investigate C# dynamic keyword, but this is tried and tested for now.
             TreeNode parameterBindings = AddFolder("ParameterBindings", parent);