Removing MooTools dependencies from media/com_joomlaupdate section

Under GSoC 2013 MooTools to jQuery project this PR includes the MooTools dependency removed version of JS files included in media/com_joomlaupdate folder. The dependency with MooTools More (spinner) yet to exist where it requires to find a different plugin to replace it later.

Feature Tracker Item:
http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=32028&start=550