CDH Improvements

CDH currently doesn't offer any advantages over Drone Factory in regards to parsing, it doesn't take advantage of the fact that we knew the series and episode(s) when it was grabbed. This PR will fix that. It will let us properly handle releases in queue that don't have a matching series title and when importing.

I'm also going to take a look at: https://trello.com/c/wU6kd6i6/778-hashed-files-inside-a-hashed-folder because this and releases where the episode inside the rar-set don't match the release can be solved by using the release name when it makes sense.