Adding additional topic icons and hardcoding topic listing
Updating references to ethics topic
updating icons
Add accordion for more topics
include font awesome as less

This allows mixins of font icon classes, but has some limitations with
the way font awesome less is normally configured. See
https://github.com/gruntjs/grunt-contrib-less/issues/113
Set styles for toggle button on collapse section
Merge pull request #1 from GSA/phil-roots

Phil roots
Merge pull request #2 from REI-Systems/phil-roots

Phil roots