Feature/cleanups1 (#114)

* Intellisense cleanups.

* Additional intellisense cleanups for default list

* Add missing Monitor.Exit in completion resolve

* A couple more cleanups.

* Bug fixes for auto-complete.

* Add comment regarding conditional logic

src/Microsoft.SqlTools.ServiceLayer/LanguageServices/QueueItem.cs

@@ -51,6 +51,11 @@ namespace Microsoft.SqlTools.ServiceLayer.LanguageServices
         /// </summary>
         public int? BindingTimeout { get; set; }
 
+        /// <summary>
+        /// Gets or sets the timeout for how long to wait for the binding lock
+        /// </summary>
+        public int? WaitForLockTimeout { get; set; }
+
         /// <summary>
         /// Converts the result of the execution to type T
         /// </summary>