Added new folder based series matching expression (thanks riggnix!)

Enabled a modified "nnn" based episode matching expression
(MP2-411)
Fixed detection of valid videos, using existance of VideoAspect instead of filled Title (MP2-411)
Fixed handling of Video mp4 files, which got also an AudioAspect created (MP2-411)
Disabled IMDB id detection based on sibling file names, as it leads to false detections if there are multiple movies in a folder, first IMDBID would be used by all. (MP2-411)
Made NoLocalization public so it can be used for testing
Improved handling of ResumeDownloads (avoid exception if ThreadPool is missing); Made Init() public (for testing)
Added GetLevenshteinDistance check also for single results, as the returned match might be wrong
Increased tolerance; Replacing more strings ("teil", "part") before comparing LEVENSHTEIN_DIST
Added property to avoid downloading of fanart
Added Unit Test for movie online lookup
Added series pattern test

Modified movie test to execute one test per method
Trivial refactoring
Fixed NRE in local shares config
Invalid image data might cause exceptions when processing thumbs