Merge presence refactoring branch

daemon/doc/dbus-api/spec/callmanager-introspec.xml

daemon/doc/dbus-api/spec/configurationmanager-introspec.xml

daemon/doc/dbus-api/spec/instance-introspec.xml

daemon/doc/dbus-api/spec/presencemanager-introspec.xml

daemon/src/account.cpp

daemon/src/account.h

daemon/src/account_schema.h

daemon/src/client/callmanager.h

daemon/src/client/client.h

daemon/src/client/dbus/Makefile.am

daemon/src/client/dbus/callmanager-introspec.xml

daemon/src/client/dbus/callmanager.cpp

daemon/src/client/dbus/client.cpp

daemon/src/client/dbus/configurationmanager-introspec.xml

daemon/src/client/dbus/configurationmanager.cpp

daemon/src/client/dbus/presencemanager-introspec.xml

daemon/src/client/dbus/presencemanager.cpp

daemon/src/client/presencemanager.h

daemon/src/sip/pres_sub_client.cpp

daemon/src/sip/pres_sub_client.h