MIDI plugin: Default SysEx init message set to "None"

Audio Input: fixed crash occurring on Linux for unusable audio devices
Removed IntensityGenerator, now replaced by the new PaletteGenerator
Added Joep Admiraal to QLC+ contributors
Updated MIDI translations (around 20 new strings on MIDI_*.ts)
Add Midi templates to packages installation scripts
Some "Color" -> "Colour" rename
Some more "Color" -> "Colour" updates
Added Popup message on audio input initialization error

Fixed build failure
Fixed typo in Function Manager

Added more check on ALSA audio input code
Minor changes to fix build in release mode
Rename midiMessage to initMessage
Added Description tag to midiTemplate files
Changed initMessage into a QByteArray
Added Akai APC20 input profile
Input/Output: applied several fixes to audio input:

- use correct device names for ALSA
- it is now possible to change audio device without closing QLC+
- audio tree list is no more decorated
Fixture fixes:

- PAN fine/TILT fine should have Group byte="1"
- remove executable bit
Fixture Remap: improved remapping of fixtures with of the same type
Function Wizard: add a Click & Go slider for every fixture group
Fixture Manager: refresh fixtures list when loading a project on startup
Spanish Translation
Merge pull request #196 from tornel/master

Spanish Translation
NEW: Load images to RGB Matrix

Allow to display png/jpeg/gif/... images in the RGB Matrix.
Images cna be displayed:
- statically
- scrolling horizontally/vertically
- as an animation where the image is horizontally split in frames. The frames are displayed one by one. Horizontal size of the frames is equal to RGB matrix width.
RGBImage: proper paths