[ #13801 ] Fix about 200 Krazy2 notification/warning/comments

kde/src/lib/Contact.cpp

kde/src/lib/ContactBackend.cpp

kde/src/lib/ContactBackend.h

kde/src/lib/CredentialModel.cpp

kde/src/lib/CredentialModel.h

kde/src/lib/HistoryModel.cpp

kde/src/lib/HistoryModel.h

kde/src/lib/InstantMessagingModel.cpp

kde/src/lib/InstantMessagingModel.h

kde/src/lib/VideoCodecModel.cpp

kde/src/lib/VideoCodecModel.h

kde/src/lib/VideoDevice.cpp

kde/src/lib/VideoDevice.h

kde/src/lib/VideoModel.cpp

kde/src/lib/VideoModel.h

kde/src/lib/VideoRenderer.cpp

kde/src/lib/VideoRenderer.h

kde/src/lib/configurationmanager_interface_singleton.cpp

kde/src/lib/dbus/metatypes.h

kde/src/lib/sflphone_const.h