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 Job ID Name Coverage
  Test
passed #2474
Go-py2.7

00:01:18

passed #2475
Go-py3.4

00:00:56

passed #2476
Go-py3.5

00:01:22

passed #2477
Go-py3.6

00:00:56

72.0%