".BIN" and ".BIN" to lowercase ".bin".
- Philips: Removing a channel from a list is no longer possible (because it is not supported by the TV's import).
When saving a file, all unsorted channels will be placed at the end of the list.
- support for Philips Repair\mgr_chan_s_fta.db lists is now read-only. Files can be used as a reference list,
but modifying them won't be possible.
- 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)
