[fix bug 995950] Remove old images and scripts.
[bug 926687] Delete group.languages contenttype and permissions.
[fix bug 970697] Display websites in central column.
[Fix bug 694410] Add story link to profile
[Fix bug 703316] Update invite email
[fix bug 990538] Beautify and cleanup group urls.
Clean up testcases
[bug 978694] Tests for GraphiteMixin.
This wasn't added to the original commit, too many untracked files.
Since the most common test scenario requires vouched users to work, I switched UserFactory to vouch users by default. Also added parameter 'vouched' to easily explicitly control the vouch status.
[fix bug 992849] Remove unvouched users from groups.
copy dev over
Update flake8 conf and fix linting errors.
A pep8 / pyflakes update surfaced a few linting errors.
[Fix Bug 989342] Let managers delete groups with a test to prove it.
[bug 916800] Add Django's Auth Backend to enable permissions on Admin Panel.