Bootstrap3+off canvas complete

### 125 Commits covering:

 - Upgrade to Twitter Bootstrap 3

 - Full mobile responsive support

 - iPhone-Awareness for Apple full-screen App Mode

 - New Sidebar menu system for mobile and tablet

 - Upgrade to Angular 1.2.9 (major upgrade all the way from v.3)

 - Complete UI rebuild from Modals to index screen

 - Removal of AngularStrap library (which leaves related proposal sorting not working at the moment)

 - Not a production release, but rather a merging in of a rather large body of work back into Master for other developers to rebase up to this level.