Tvdb mappings are now retrieved automatically. So there is no need to keep them in Preferences. Objects in Preferences are stored in the register (on windows). They are now moved to the diskcache. Automatic migration of the settings is included, and mappings are removed from register.
Removed deprecated online serie mapping (and not needed anymore, because mappings are retrieved automatically now).
Removed duplicated subtitle results
Fixed checking for new update
Defered loading of database to other thread to improve the startup performance of the app.