Add banners for AP 18/19

Banner for the exam, the resit and the practice session
3 jobs for ap1819-banner in 15 minutes (queued for 8 minutes and 53 seconds)
Status Job ID Name Coverage
  Test
passed #39135
backend

00:11:48

passed #39136
frontend

00:02:33

passed #39137
stats

00:00:39