[Windowing] Tabbing Rename

Renamed all instances of NewWindow to be
NewTab instead. WTD-16.

platform/commonUI/browse/src/windowing/NewTabAction.js

@@ -36,7 +36,7 @@ define(
          * the user interface.)
          * @constructor
          */
-        function NewWindowAction($window) {
+        function NewTabAction($window) {
             return {
                 /**
                  * Open the object in a new window
@@ -49,6 +49,6 @@ define(
             };
         }
 
-        return NewWindowAction;
+        return NewTabAction;
     }
 );