adding additional links section, changing links to https, fixing broken links
Repositions one line of code and adds one other
Replaces back chevrons with Font Awesome versions to support iDevices.
Fix displaying stats for non-18F github repos.

Namely, this fixes the NREL/api-umbrella stats on the api.data.gov page.

The stats were being pulled correctly by the javascript code, they just
weren't showing up on the page, since it couldn't find the expected
selector (which expected just the repo name, and no organization name).
This update should ensure that just the repo name is used when
generating the elements, regardless of organization name.
Update with more recent metrics from https://api.data.gov/metrics/

In our last round of metric updates, we also added a "since" date to the
numbers mean a little more, so I made that same change here. Let me know
if anyone feels differently.

(and we have plans to API-ify these metrics, so at some point, we might
have a better way to maintain these).
Merge branch 'gh-pages' of github.com:18F/dashboard into gh-pages