Catalan translation, new strings translated.
Merge pull request #338 from sbenejam/master

Catalan translation, new strings translated.
Doxygen improvements: more modules, added faked containers so that they are properly recognized
Plugins: Major rework of the DMX USB plugin to support all the Pro widgets features.

This fixes the simultaneous input/output on the same device.
Now the Pro Mk2 supports also MIDI input/output.
Code cleanup. Removed a bunch of overloaded classes.
Added Pro modes grid to DMX USB plugin documentation.
Fixed documentation style CSS
Fixed DMX USB plugin Windows build
Plugins: propagate a return value on openInput and openOutput

This is to be able to display an error message to the user if something went wrong with the physical device
Updated translations (UI and DMXUSB changed)
Build: Added define to totally disable debug messages.

This dramatically reduces a release build size
Fixed test units for InputOutputManp and VCFrame
Updated catalan translations on ui and dmxusb
Merge pull request #339 from sbenejam/master

Updated catalan translations on ui and dmxusb
Plugins/DMX: Removed wrong code: IO lines start from 0
Fix ADJ event bar heads
2D monitor: Fix wrong behavior wehn trailing zeroes in the universe are not sent
2D monitor: fix heads computation when column is 1
Virtual Console: added Frame enable/disable external control
Merge branch 'master' of github.com:mcallegari/qlcplus
2D monitor: New way of displaying pan/tilt values - Purple ring for pan, and Turquise ring for tilt.
2D view: Fix case when no PAN channel is present
2D monitor: document PAN/TILT display