Move basic auth check

At the previous point not all apps were initialized. Now the basic auth check happens together at the same location as all others.

Fixes https://github.com/owncloud/core/issues/11129
Remove unused and overflowing function

Resolves https://github.com/owncloud/core/issues/10991 failure 4
Merge pull request #11130 from owncloud/moveBasicAuthCheck

Move basic auth check
Merge pull request #11151 from owncloud/removeOverflowingFunction

Remove unused and overflowing function
update encryption doc link

I don't know how we missed to update this :/

update ldap doc link
Merge pull request #11141 from owncloud/update_encrytionlink

update encryption doc link
[tx-robot] updated from transifex