Close CSRF loophole (Closes #76)

- if you embed "/delete/memedaddy" into a page the link would get deleted
- this no longer is allowed
4 jobs for 76-delete-lnk-csrf in 1 minute and 22 seconds (queued for 3 seconds)
Status Name Job ID Coverage
  Test
passed Go-py2.7 #2474

00:01:18

passed Go-py3.4 #2475

00:00:56

passed Go-py3.5 #2476

00:01:22

passed Go-py3.6 #2477

00:00:56

72.0%