Ignore port for trusted domains

This lead to a lot of confusion in the past and did not really offer any value. Let's remove the port check therefore. (it's anyways not really a part of the domain)

Fixes https://github.com/owncloud/core/issues/12150 and https://github.com/owncloud/core/issues/12123 and also a problem reported by @DeepDiver1975.

Conflicts:
	lib/private/request.php
Add repair steps for legacy config files

Remove all ports from the trusted domains

Conflicts:
	lib/private/repair.php
	lib/repair/repairconfig.php
Merge pull request #12253 from owncloud/port-12154

Port 12154