(legacy) move certs.inc into config space, maybe analyse this one a bit further later on. and add missing dependency

This reverts commit 6e1822a2.
Not such a good idea as discussed with Ad.

Fixes in german translation from @DokuKaefer

from the File https://www.dropbox.com/s/uue0pixs2fs9hwh/opnSense.txt?dl=0
without the change 3297