Merging changes from Prinz23, PR#156
Merge pull request #410 from WebSpider/dev-merge_prinz23_pr156

Added nzbget changes from mr_orange from Prinz23@7282846

* HTTPS support
* appendurl for NZBGet 9+
* fix for proper/repack dupescore

Additional changes:

* unique Dupekey for TVRage Shows (for TVDB Shows the Dupekey is the same as in mr_orange and midgetspy dev - branch)