Some more icons improved

Blackout icons thanks to Petja Touru
Removed unused console.png
Updated broken documentation
Increased Virtual Console icons size
Added fixture: Chauvet ColorBand Pix IP (thanks to George Qualley)
Improved blackout icon
More icon improvements
Improved German Translation
Merge pull request #66 from pixeldoc2000/master

German Translation updated
Added fixture: American DJ Mega Tri Bar (thanks to CShark)
Improved Virtual Console Slider groups selection (level mode) by adding colours channels

Fixed italian translation
Fixed outbound limits of Cue Lists steps. Now Previous/Next operations will always stay in the list

Improved Virtual Console Cue List with more manual controls (Play/Stop/Previous/Next)
Iconified Play/Stop/Previous/Next buttons to test a Chaser
Added page change feature for Enttec Wing (thanks to Thomas Achtner)
ArtNet universes numbering starts from 0, as the specifications say
Added Fade In/Fade Out/Duration columns to Virtual Console Cue List widget (thanks to Thomas Achtner)

Updated translations and removed UI obsolete strings
Prepare for 4.2.1 release
PlaybackWing test must be absolutely fixed !

Added contributor and fixed AboutBox test
Added vertical separators to Chaser Editor
Channel Groups can be associated to a Scene and saved into the project
Updated translations
Force UTF-8 encoding when saving the XML project
Force UTF-8 encoding on Fixture Editor too
Updated Changelog for econding issue