Map quota keys to translatable strings

Change-Id: I1446efad26b140bad04f6c2bddc4f8f980735d72
Related-bug: 1274234
Updated from global requirements

Change-Id: I671e645d783d8a12dbbb20db1aa408c956f9830f
Add Font Awesome icons

This patch adds an xstatic-packaged font awesome icon font to Horizon.
We need it, because the font icons included in Bootstrap 3 are non-free
and are likely to be excluded from some distributions. It also has a much
richer set of icons to choose from.

Change-Id: I725e0d77d230c16c01971f9af0dc02eb5662154d
Partial-implements: blueprint bp/font-icons
Merge "Updated from global requirements"
Merge "Add Font Awesome icons"
Merge "Map quota keys to translatable strings"