Fix compilation problem reported by Maikel Boerebach

(https://sourceforge.net/p/qlcplus/discussion/general/thread/0b17a419/#c959)
Most probably wrong method was called.
Small Doxygen fix (strip paths from output)
Added script to prepared docs for the web
New fixture: Stairville MH-100 Beam 36x3 LED (thanks to Jasper Zevering)
New fixture: Stairville SC-X50 MKII (thanks to Johan Förberg)
Update Spanish Translation
New fixture: Light Emotion LED Parbar (thanks to tasaei)
Merge pull request #352 from tornel/translation

Update Spanish Translation
Web access: correctly render and handle multipage frames
Web access: improved Cue List look & feel
Web access: Simple Desk now shows icons on each channel

QLCChannel: Fixed a stupid regression showing a wrong icon for a color channel
Web access: Updated the Web API test example with the latest changes
New input profiles: Akai APCMini and Novation Launchpad (thanks to Maikel Boerebach)

Would be nice to have more meaningful names though