core: put the AE logo in the CSS

Signed-off-by: Skia <skia@libskia.so>
1 job for master in 4 minutes and 36 seconds (queued for 1564 minutes and 9 seconds)
Status Name Job ID Coverage
  Test
failed test #1141

00:04:36

 
Name Stage Failure
failed
test Test There is an unknown failure, please try again
  File "/builds/ae/Sith/eboutic/tests.py", line 149, in test_buy_subscribe_product_with_credit_card
self.assertTrue("Non cotisant" in str(response.content))
AssertionError: False is not true

----------------------------------------------------------------------
Ran 47 tests in 72.661s

FAILED (failures=1)
ERROR: Job failed: exit code 1