NEW: In Show Manager, tracks can be moved up or down

Fade out time is now considered out of a step duration
Fixed sequence incorrect start time when dragging it
Added fixture: Contest LedColor (thanks to Nicolas K)
Updated translations
Added fixtures: Lanta Fireball P64s, QTX Light Slimline RGB LED Par can [153.778], KAM LED PartyBar (thanks to Brian Ely)
Merge branch 'master' of github.com:mcallegari/qlcplus
Merged QTX fixtures
Added dutch translation (thanks to Raymond Van Laake)
Fixed sequence steps fixup indexing
Added fixtures: Stairville MH X25, Stairville SF 1500 (thanks to Veljko Stankov)
Added fixture: Dune Lighting MOVLED60W (thanks to Nicolas K)
Added fixture: Stairville xBrick Full Colour (thanks to fintch)
Updated show manager documentation with track move up/down feature
Added reference to TextWrangler website
Completed dutch translation
Added fixture: Pro-Lights LumiPAR18QPRO (thanks to Veljko Stankov)
Fixed test units and show manager grid height
Ready to release 4.4.1
Bumped to version 4.4.2

Renamed Stairville MH X50 which didn't get installed on Windows cause of the '+' symbol