Merge pull request #162 from daschuer/wpushbutton_default

Cleaning some Skin - Control connection issues.
Fix default ducking mode.
Collapse talkover controls in EngineChannel and EngineMicrophone.
Add talkover check for master channel.
Support multiple talkover channels at once.
Fix test build.
Get default emit and direction options from WBaseWidget.

Gets rid of special-casing of WPushButton.
Revert removal of left/right event specificity.
Fix incorrect double inits
Merge branch 'master' into wpushbutton_default

Conflicts:
	src/skin/legacyskinparser.cpp
	src/widget/wbasewidget.cpp
	src/widget/wbasewidget.h