Voice Message notification

New tests and features
Add mute/unmute
Change the refuse message send

It's working
Lot of debugging code right now
You need STUN, because it doesn't work without it

Initialize the sound volume inside init() -> initVolume()
Add the argtokenizer.cpp file
I didn't remove the sound configuration for qt (x/y)

Debugging old code
Deletion of old Request is working
Call is ok, but sound is not working yet

Zeroconf Integration
and
managerimpl.cpp bug fix for gui setup (when sflphonerc file doesn't exist)

Fix volume control