Fix link for repository members removal
Make super group additive
Fix path to wiki index in atom feed
Don't crash activities page with a commit with an empty message
Prevent removal group creator from the group
Remove dead code
Implement query for selecting members of a project
Fix too large number of pages on /projects
Fix site host name customization in mailer
Rebuild indexes on backup restore
Add repository creation mirroring
Add clone and delete operation support to MirrorManager
Call mirroring operations from repository create and clone processors
Make MirrorManager#delete_repository just get the repository path

We can't pass the repository object here because the record doesn't
exist anymore.
Fix spelling of "--git-dir" in MirrorManager
Make real_gitdir an accessor on fake Repository class
Make the push processor mirror the repository changes
Remove unused variable
Add test for RepositoryDeletionProcessor
Make RepositoryDeletionProcessor mirror the deletion