[Frontend] Style tweaks for edit mode

open #199
Added bg color in edit area when edit mode
is active; Added to-do for ng-init in
object-inspector.html;
Ready for integration into open199;

platform/commonUI/general/res/templates/object-inspector.html

@@ -19,6 +19,7 @@
  this source code distribution or the Licensing information page available
  at runtime from the About dialog for additional information.
 -->
+<!-- TO-DO: get rid of this ng-init and replace with a live state value -->
 <div ng-init="editMode = true;"></div>
 
 <span class="l-inspect" ng-controller="ObjectInspectorController as controller">