Added "ri" and "gtags-mode" to ruby buffers
Bound gtags-find-rtag to M-,
Multiple improvements

- Removed spaces from workspace names (caused trouble)
- Bound gmrun to mod-r
- Created workspace F1 dedicated for beamer output
- Bound XF86Audio... to pactl (pulseaudio)
- Fixed tabbed startup of wsp1
- Startup pulseaudio
Added Workspacelayout for emacs