Nicer looking main buttons.
Merge remote-tracking branch 'origin/feature/redesign' into feature/redesign
Changed icons in import views
Rebuild icon library to make the font-awesome icons default.
made link texts lowercase again.
changed remaining button icons
made buttons uppercase via CSS and centered button icons
added missing rotation and flip styles to combined font library.
changed wrong icon in drop down
renamed icon font to FontAwesome, otherwise plugins using this font (like unify) will break.
Merge pull request #11 from mploigt/feature/redesign

Nicer looking main buttons.