Adding switch echo echo (for testing only...)

ChangeLog

TODO

src/audio/audiofile.cpp

src/audio/audiolayer.cpp

src/audio/audiolayer.h

src/gui/guiframework.cpp

src/gui/qt/ConfigurationManagerImpl.cpp

src/gui/qt/ConfigurationManagerImpl.hpp

src/gui/qt/ConfigurationPanel.ui

src/gui/qt/ConfigurationPanel.ui.h

src/gui/qt/ConfigurationPanelImpl.cpp

src/gui/qt/NumericKeypad.cpp

src/gui/qt/NumericKeypad.hpp

src/gui/qt/SFLPhoneApp.cpp

src/gui/qt/SFLPhoneApp.hpp

src/gui/qt/SFLPhoneWindow.cpp

src/gui/qt/SFLPhoneWindow.hpp

src/gui/qt/globals.h

src/managerimpl.cpp

src/managerimpl.h