dring: add cancelMessage API

bin/dbus/cx.ring.Ring.ConfigurationManager.xml

bin/jni/configurationmanager.i

bin/nodejs/configurationmanager.i

configure.ac

src/account.h

src/client/configurationmanager.cpp

src/dring/account_const.h

src/dring/configurationmanager_interface.h

src/im/message_engine.cpp

src/im/message_engine.h

src/manager.cpp

src/manager.h

src/sip/sipaccountbase.h