soloframe: can have multiple buttons associated to the same function

ALSO: fix adding/removing buttons during virtual console live edit
(buttons were not connected, now they are)

Conflicts:

	ui/src/virtualconsole/vcsoloframe.cpp
addwidgetinpage should always be called
update changelog

Conflicts:

	debian/changelog
integrate vcaudiotrigger in soloframe compatible widgets
fix soloframe signal connections when copying and changing multipage mode
fix loading
better cleanup of removed widgets
Merge pull request #416 from plugz/soloframe-fix-2

Virtual Console/Solo Frame: can have multiple buttons associated to the same function