Fix tests
Fixes [#697].
There seem to be many deleted tests here, which I wouldn't expect unless some fundamental incompatibility had come up with all of them?
Ops, that's right. I did a lot of tests, including removing features and it seems I didn't revert all deletions once I found the real problem.
I'll work on this.
Re-added the missing tests, I think they are all back.
Also, fixed a problem with user registration. It seems in D11 by default visitors can't create accounts so tests that accessed user/register failed). Fixed changing who can register to vistors:
drush cset user.settings register visitors
@rsanzante why do we need to rename the features directory to features-all?