Spanish Translation
Merge branch 'master' of https://github.com/mcallegari/qlcplus into translation
Spanish Translation Background Images
IDs in parameterstuning.html
Style for index page
Merge pull request #336 from tornel/translation

Updated Spanish Translation
Merge pull request #337 from kripton/german

Updated german translations
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