Added tooltips to simple state buttons in grid views

http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=31218

![tooltips](https://f.cloud.github.com/assets/744259/692728/e6e40d96-dc43-11e2-91d0-9d4ca7ebe435.png)

### Testing Instructions
Check all the grid views with simple state buttons (list views, like the Category Manager, Plugi-in Manager, etc) to see if the tooltips is added to the state buttons.