Improved if/else structure related to sidebar

http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=33200


This PR improves the if/else structure around the sidebar div in different admin views.

This is to make it the same across the different views. And also to prevent IDEs from messing up indentation.

Currently the if/else is around the starting div, which causes the code to have 2 starting divs, but just one closing div.
This causes formatting and error checking issues.

### Update
After discussion, the entire if structures have been removed as they are useless