Abort rename when something fails

And tag the folder with failed_rename so that the release with not be
deleted later on.
Downloader cleanHost

Extend the use of clean host (add more checks and features) and make the settings more dummy proof.
Fix Bluray.com encoding issue
Merge pull request #2691 from mano3m/develop_bluray

Fix Bluray.com encoding issue
Merge pull request #2690 from mano3m/develop_renamer

Abort rename when something fails
Merge pull request #2688 from mano3m/develop_inctran

Add incomplete folder support to Transmission
Merge branch 'develop' of github.com:RuudBurger/CouchPotatoServer into develop
Merge pull request #2687 from mano3m/develop_log_metadata

Log overwriting of metadata files
Queue multiple media refresh
Merge branch 'develop' of github.com:RuudBurger/CouchPotatoServer into develop
Merge branch 'develop_newznab' of git://github.com/mano3m/CouchPotatoServer into mano3m-develop_newznab
Style `custom tag` input
Add description to abr
Merge branch 'refs/heads/mano3m-develop_newznab' into develop
Split identifier by know tag if possible
Don't normcase in sp function
Lowercase compare
Custom tag was never defined
Higher z-index for userscript popup. fix #2703
Normcase in folder compare
Merge branch 'develop' of github.com:RuudBurger/CouchPotatoServer into develop