Re-enable Font Awesome

Uncommented the import of Font Awesome in main.scss and added
the actual fonts. Changed the path to the fonts in the sass.
Add an index.html for testing the module

The index.html added to the root of the module allows us to
test that styles are indeed working.
Fix a padding issue on action buttons

Changed padding of i.fa-fw to get a consistent circle around fixed
width icons in action buttons.