Add add/edit button for labels to template.
Add API endpoints for getting repo labels and editing issue labels.
Update docstring for modify_labels to mention that its always
proxied.
Tweak proxy_request to allow us to monkey patch the path.

This probably means we should refactor this at some point, the
real issue is the REPO_ISSUES_URI should really be something like
REPO PATH <owner>/<repo> and we can build from there.
Rudimentary nuts and bolts for editing labels.
Simple styles for issue label editor. To be replaced.
Add a class hook for the label filter.
Some basic label filtering. Maybe super inefficient?
Break out issues.js into comments/issues/lables.js +minify.
Should be logged in to modify labels (even though its proxied).
Merge branch 'labelz' into dev.webcompat.com

* labelz:
  Should be logged in to modify labels (even though its proxied).
  Break out issues.js into comments/issues/lables.js +minify.
  Some basic label filtering. Maybe super inefficient?
  Add a class hook for the label filter.
  Simple styles for issue label editor. To be replaced.
  Rudimentary nuts and bolts for editing labels.
  Tweak proxy_request to allow us to monkey patch the path.
  Update docstring for modify_labels to mention that its always proxied.
  Add API endpoints for getting repo labels and editing issue labels.
  Add add/edit button for labels to template.