Merge pull request #1059 from Bart39/dev

fixed issue with predb
Moving initialising of $this->c as it may be needed if the Db fails to initialise.
Merge branch 'dev' of github.com:nZEDb/nZEDb into dev
updated changelog for my last commit, oops.
Merge pull request #1061 from niel/dev

Dev
fixed previous push to postprocess_threaded.py
Merge branch 'dev' of github.com:nZEDb/nZEDb into dev
attempt to fix is null error in stage, releases.php
typo
typo
added OMDb API lookup as first lookup for imdb id
typo
more collectionsCleaner / ReleaseCleaner additions