AudioTriggers can now control tap button of SpeedDials

plus add some documentation
Add short kiosk mode description/howto
Disable thresholds for sliders in audio triggers widget
Store thresholds of the audio bars
Add divisor for Speed dial tapping; only every X-th tap will be really sent to Speed Dial
Add comment on EFX intensity
Merge pull request #177 from janosvitok/audiotriggers

AudioTriggers can now control tap button of SpeedDials