Made MainController a MVerbComponent::Listener
Added MVebComponent::updateFromAudioSource
Main window finetuning
Removed obsolete slider-value-settings
Added some more constness to MVerb.h
Extended MVerbPlus for xml-handling & more
Changed default slider range to 0.0-100.0
Removed upscaling from MVerb::getParameter

Now getParameter returns what was set by setParameter, upscaling
is done in gui only