Test data cleaning.
Remove unneeded users code.
Add new test data.
Add tests for the login form.
Made the tests go a bit faster.
Made the hidden field optional.
users urls are now gone.
Make the allowed time difference 7 days.

For our initial import, we used to check if the first episodes of every season
were 1 day or less apart but that turned out to be too short, ER has an example
which is a week apart. I added that to the tests before and this fixes the
actual bug.
Coverage tweaking.
Made testing through make nicer.
Only do mocked tests on travis.