Issue 3494: Moderators can delete PromptMeme sign-ups
Issue 3494: Now with tests
Merge branch 'master' into issue_3494
Merge branch 'master' into issue_3494
Issue 3494: Signups dont need to be complete before a mod can delete
Merge pull request #1101 from scottsds/issue_3494

Issue 3494: Moderators can delete PromptMeme sign-ups