- fixed issues where SQLite database files didn't get unlocked after saving
- fixed quirks with missing e_sqlite3.dll when running unit tests with Resharper
- added round-trip unit test for all loaders to check reordering channels and favorites, saving and reloading
- internal code clean-up regarding different favorite list modes (none vs. flags vs. ordered per source vs. mixed source)
- fixed handling of reference lists (matching sat/cable/antenna, digital/analog, tv/radio/data criteria), especially for m3u lists which don't contain ONID-TSID-SID to identify channels