OSC plugin now supports multiple universes (up to 4)

Update french translation
Updated .gitignore file
Started ArtNet native output integration (disabled by default)

code cleanup
Implemented ArtNet plugin close procedure
fixed channels group display for partial fixtures modes
Fixed Enttec Playback Wing input line connection (thanks to offtools for reporting)
Updated Changelog. Ready to release 4.1.2
Merge remote-tracking branch 'upstream/master'