Merge pull request #49 from github/header-links

Header links
Make first library link in each header clickable

Fixes the header element overlaying the first list element, as
mentioned in https://twitter.com/ctshryock/status/403171957236977664
Such noob. Very mistake.

The font is stored as octiconsregular, not octicons
Merge pull request #51 from github/header-link-font-fix

Fix missing link character
Merge pull request #50 from github/library-header-fix

Make first library link in each section clickable
Merge remote-tracking branch 'internal/master'