jamiaccount: split account management

MSVC/ring-daemon.vcxproj

MSVC/ring-daemon.vcxproj.filters

bin/Makefile.am

configure.ac

src/im/message_engine.cpp

src/jamidht/Makefile.am

src/jamidht/account_manager.cpp

src/jamidht/account_manager.h

src/jamidht/accountarchive.cpp

src/jamidht/accountarchive.h

src/jamidht/contact_list.cpp

src/jamidht/contact_list.h

src/jamidht/jami_contact.h

src/jamidht/jamiaccount.cpp

src/jamidht/jamiaccount.h

src/jamidht/namedirectory.h

src/jamidht/p2p.cpp

src/security/certstore.cpp

src/security/certstore.h