Updated request builder interfaces to inherit from common interface

Added IBaseRequestBuilder to consumers of IRequestBuilder.Base
Applied <auto-generated/> comment tag to all generated c# files.
Added comments to all complex types class definitions.

Author: MIchaelMainer

Templates/CSharp/Base/IRequestBuilder.Base.template.tt

@@ -40,7 +40,7 @@ public string GetInterfaceDefinition(string interfaceName)
     stringBuilder.Append(Environment.NewLine);
     stringBuilder.Append("    /// </summary>");
     stringBuilder.Append(Environment.NewLine);
-    stringBuilder.AppendFormat("    public partial interface I{0}", interfaceName);
+    stringBuilder.AppendFormat("    public partial interface I{0} : IBaseRequestBuilder", interfaceName);
 
     return stringBuilder.ToString();
 }

Templates/CSharp/Base/SharedCSharp.template.tt

@@ -11,6 +11,7 @@ bool logTemplateSrc = true;
 <#=writer.WriteHeader()#>
 
 // **NOTE** This file was generated by a tool and any changes will be overwritten.
+// <auto-generated/>
 
 <# if (logTemplateSrc) { #>
 // Template Source: <#= TemplateName(host.TemplateFile) #>

Templates/CSharp/Model/ComplexType.cs.tt

@@ -48,10 +48,14 @@ namespace <#=complex.Namespace.GetNamespaceName()#>
 // to disambiguate the type of the descendant class being sent. 
 if (complex.IsBaseAbstractAndReferencedAsPropertyType() && !complex.IsAbstract)
 {
-#>        public <#=complexTypeName#>()
+#>        /// <summary>
+        /// Initializes a new instance of the <see cref="<#=complexTypeName#>"/> class.
+        /// </summary>
+        public <#=complexTypeName#>()
         {
             this.ODataType = "<#=complex.FullName#>";
-        }<#
+        }
+<#
 }
         foreach(var property in complex.Properties)
         {

Templates/CSharp/Model/EnumType.cs.tt

@@ -30,7 +30,7 @@ namespace <#=enumT.Namespace.GetNamespaceName()#>
     #>
 
         /// <summary>
-        /// <#=emumMember.Name.SplitCamelCase()#>
+        /// <#=emumMember.Name.ToUpperFirstChar().SplitCamelCase()#>
         /// </summary>
         <#=emumMember.Name.ToCheckedCase().GetSanitizedPropertyName()#> = <#=emumMember.Value#>,
 	<#