Add support for absolute pathing without domain

Handles URLs beginning with / in addToSABnzbd() so future protocol and
domain hardcoding can be avoided.
Use domainless pathing in nzbclub and nzbx
additional domainless changes (untested)

NOT TESTED. These address http v https and makes them more resiliant to
domain changes.
Revert "additional domainless changes (untested)"

This reverts commit ea766740d816a424115866e5486dd73247fcb6bb.
additional domainless changes (untested)

NOT TESTED. These address http v https and makes them more resiliant to
domain changes.

fixed my newline issue
Merge pull request #41 from jsterken/domainless-pathing

Domainless pathing