swarm: sync infos such as title/description/avatar

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

bin/dbus/dbusconfigurationmanager.cpp

bin/dbus/dbusconfigurationmanager.h

bin/jni/conversation.i

bin/nodejs/conversation.i

src/Makefile.am

src/client/conversation_interface.cpp

src/dring/conversation_interface.h

src/jamidht/conversation.cpp

src/jamidht/conversation.h

src/jamidht/conversationrepository.cpp

src/jamidht/conversationrepository.h

src/jamidht/jamiaccount.cpp

src/jamidht/jamiaccount.h

src/vcard.h

test/unitTest/conversation/conversation.cpp

...nitTest/conversationRepository/conversationRepository.cpp