rename RingAccount to JamiAccount

MSVC/ring-daemon.vcxproj

MSVC/ring-daemon.vcxproj.filters

src/account_factory.cpp

src/account_factory.h

src/client/configurationmanager.cpp

src/client/presencemanager.cpp

src/data_transfer.cpp

src/manager.cpp

src/manager.h

src/ringdht/Makefile.am

src/ringdht/jamiaccount.cpp

src/ringdht/jamiaccount.h

src/ringdht/p2p.cpp

src/ringdht/p2p.h

src/sip/sipvoiplink.cpp