Merge branch 'hotfix'
finalized About page
modified heading vertical spacing
csslinted css

fallbacks, dupes, abstraction, units
slightly adjusted line height
cleaned '.fontsize-' interfaces
Merge branch 'rel-v3_1_3' into feat-fontsize

Conflicts:
	core/styles/_vert.less
	core/styles/all.css
rearranged some less files
compatibilified gradient Mixin
Merge branch 'rel-v3_1_3' into develop
Merge branch 'rel-v3_1_3'
added text decoration
cleaned up vertical rhythm spacing classes
added semantic text to icon links
added course number to math section
removed 'first' Interface from HTML
Merge branch 'feat-spacing' into develop
wrapped locations in resume with 'geo'
Merge branch 'feat-home' into develop
replaced facebook logo