Merge pull request #182 from NiKoyes/master

French Translation 4.5.1
Add relative mode to EFX - the movement is relative to head's current position

I have made this pre GM - I decided that GM should affect also relative EFX if needed/requested.
It also simplified the code a bit (compared to previous version)

When no relative EFX is running, there is minimal performance overhead.

This change allows few things:

- run more effects in parallel on the same movers (e.g. pan saw and tilt saw)

- prepare the efx's in advance without regard of the actual movers' position; then adjust
the position using scene made at the venue (make some efx at home - with relative flag;
at the venue, create scenes where all your head point down/up/left/right/center; now start
e.g. center scene and an efx - the efx will point at the centre; start right scene -
the efx will move to the right, etc.)

- control efx center in runtime by assigning xyarea/sliders to pan/tilt channels and adding relative efx

NOTE: prepare efx with center at 127;127 to be neutral
Make using the color change tool easier: now changes are tracked live
Merge pull request #183 from stefanriemens/LiveColorEdit

Scene Editor: color change tool changes live tracking
Added fixtures: Stairville PAR64 CX-3 RGBW, Stairville TRI LED Bundle Complete (thanks to Lars Kildholt)
Engine: Fixed RGB Matrix crash

Fixed scene and RGB Matrix tests.
Improved ADJ Mega Tri Bar fixture
Bugfix: copy end color in RGBMatrix
NEW: Virtual Console: added clock widget
Updated docs
More documentation improvements
Show Manager: save splitters' state
Live Edit: found a proper solution to override HTP check
Bugfix: missing #include
Fixed little HTML doc error
Virtual Console: fixed crash when enabling multipage on headerless frames
Button label rename doesn't work with translated strings. Found another (crappy) solution
Consider blind mode on scenes live editing
Live Edit: fixed blind mode for non running scenes
Updated KAM LED PartyBar with heads
Updated Robe ClubSpot 300 CT