Support GitHub Enterprise repository links

Let companies or groups that run their own GitHub Enterprise installs be
able to link their own repositories.

That's the case with our company and we can't easily link the internal
repositories.
Upgrade from Octokit 1x to 2x to resolve issues with oauth2

One breaking change was how to get the urls of objects from the github objects. The only place we used this has been updated.
Bump Rails version to 3.2.17

To pick up recent security fixes (CVE-2014-0080, 0081, 0082).
Give admins the ability to destroy all problems associated with an app
call old onerror when it's already defined
do not use constantize, use more verbose approach
typo
Return app.id in api stats
less code on controllers
[Notifier JS] Extract sprocket stacktraces.
Oups… Fix code ordering for sprocket stacktrace…
Joined reader for notice with other attribute readers on top.
Extracted version logic into a method.
Added tests for FilterCriteria.
FilterCriteria model created.
Extracted criteria matching into seperate method.
Tested validation for at least one criteria present.
At least one criteria is required to create a filter.
Tests added for FilterCriteria controller.
Filled in data for the Fabricator of FilterCriteria.