CRUD buttons changed to be more compact and use glyphicons instead of vanilla famfamfam icons

This pull request contains the following tweaks for CRUD buttons found on site:

1. made CRUD buttons use glyphicons bundled with Bootstrap instead of default famfamfam icons bundled with Roo. These icons look more Bootstrap-ish and fit much better into current UI.
2. CRUD buttons in current version are too large, making UI look awkward in some places. Made them smaller.

Tested on: IE9,10,11, Chrome 32, FF 26