monitor slider: remove scaling of displayed value
change sliderValue() so monitor is correctly updated when inverted slider
fix crash when changing input while a vcaudiotrigger is running
webaccess: fix crash when trying to update closed connection
fix crash when monitoring with a knob

Conflicts:

	ui/src/virtualconsole/vcslider.cpp
Merge pull request #400 from plugz/vcslider_fix_inv_monitor

change sliderValue() so monitor is correctly updated
Merge pull request #402 from plugz/webaccess_crash

webaccess: fix crash when trying to update closed connection
Merge pull request #403 from plugz/slider_monitor_noscale

monitor slider: remove scaling of displayed value
Merge pull request #401 from plugz/vcaudiotriggers_crash

fix crash when changing input while a vcaudiotrigger is running