Fixes shows not being added from tvrage
This is a first attempt of getting the season pack downloading to work.
Unfortunately some of the old code I modified is still not 100% clear to me.. so I can't really oversee if this will work. That's why I suggest, this should be extensively tested, before merging into master!

I broke backlog searching.. Should be working again.

Tested, and seems to be working fine!
Merge pull request #825 from KontiSR/fix_seasonpacks_testpls

Season pack fix attempt #1
Fixes exception generated in thread DAILYSEARCHER: 'NoneType' object has no attribute 'getEpisode'
First changes for imdb watchlist checker

Thrown the couch code overboard and created my own version of an imdb watchlist scraper

Added IMDB thread and test values with an IMDB csv url. These values should be replaced by front end UI settings.

- Removed some tracelogs when unable to download watchlist
- Added settings for enabling and setting of the watchlist csv url
TODO:
- create UI for setting from frontend
- Implement frontend and backend checks for validating the csv url

changed back default imdb check interval to 1 hour