Quiz 4.0 Class renaming and deprecation

This tracker is to remove all the depracated classes and add the references to renameclasses.php. After all the plugins are integrated, the old deprecated classes are no longer needed as some of them are moved classes/local/bank or a qbank plugin. As different classes might require in different places while integrating plugins, this tracker will help the build to do the class cleanup after inetgrating the plugin and also get rid of any regression.