Only log deletion when we're really deleting
Adding webm as a supported extension
tvdb_api update, backport from midgetspy
* Skip episodes which are missing SeasonNumber or Episode Number (or DVD_season or DVD_episodenumber)
* Avoid excessive calls to the ShowContainer garbage collection
* fix ShowContainer cache resizing
Attempt to get quality from snatched episode status

Backport from midgetspy
Merge pull request #323 from WebSpider/dev-midgetspy_fixes

Midgetspy backports