switching to font-awesome. #46

changed icons.
need to drop refs to entypo
need to style new icons appropriately
need to download local sass
use fa-bars for menu button #70
self-hosting fontawesome #70
Deal with line-heights, etc. for footer with FontAwesome (#70).
Footer FontAwesome colors and FontAwesome list item spacings (#70).
Fix FontAwesome hovers and finish removing entypo stylesheets (#70).
Final fix for #70 -- spacing issues.
Merge branch 'dev' into gh-pages.
Close #70. Close #46. Close #44. Close #43. Close #25.