Revert "Improves code for copying items in admin interface and fixes saveItems() for items with lists in controllers"

This reverts commit e1b9a0e252fb683c8320d8c393e7827d5848bb0f.
Revert "Provides onCopySelectedItems for all TreeUi implementations"

This reverts commit 387b471f2c2dd7b327d8e077e61f9ca33a121f2a.

Conflicts:

	client/extjs/src/panel/catalog/TreeUi.js
Revert "Merge pull request #345 from cookiekiller/copy_as"

This reverts commit 6d3ae64024703f80f08438456cb977322bac74ca, reversing
changes made to 4c06a2860df2a686400111a4dfca414cd280325f.
Updates core JS file after removing "copy" commits for the admin interface