Un-working code from my attempt to display invites.
Merge branch 'develop' into feature/display-invites

-   threebean may have resolved the issue I was having with the assertion resource
Should be self.request.
Temporarily avoid using pylibravatar to workaround python-pydns issues on epel6.
Space those invitations.
Cleanup.
Fix libravatar idiosyncracy.
Only display invitations which have not yet expired.
Turns out it doesn't really need to be that big.
Merge branch 'develop' into feature/display-invites
Use parsed dates when creating new invitations.
Use correct resource_url when doing login redirection for invitations.
Update invitation code to use the latest tahrir-api.
Remove hardcoded redirect after invitation is claimed.
Add some TODO notes.
Merge branch 'feature/display-invites' into develop
Relative dates ftw.
Bugfix - pass person.email instead of person.id.
Fix an error that was occuring with Postgres.
Make all index columns display 5 items.