Merge pull request #1407 from am11/master

Release: Version 2.3.1
HTML: Added Angular class name completion
HTML: Angular completion cleanup
CSS: Added snippets for gradients
HTML: Display Angular logo in completion
HTML: Display Bootstrap logo in completion
Bundle: Fixes misc. issues. (#1401)

-Prevents from crashing on delete.
-Don't run when file is not checked-out by
 source-control.
Merge pull request #1411 from am11/master

RTLCSS: Now runs on build
Merge pull request #1410 from scabana/master

Fixing VS crash on bundle file deleted (#1401)
Merge pull request #1412 from am11/master

Settings: Fixes decription RTLCSS