[#2006] Add getConfList method over dbus

sflphone-client-gnome/src/actions.c

sflphone-client-gnome/src/contacts/calltab.h

sflphone-client-gnome/src/contacts/calltree.c

sflphone-client-gnome/src/contacts/conferencelist.c

sflphone-client-gnome/src/contacts/conferencelist.h

sflphone-client-gnome/src/dbus/callmanager-introspec.xml

sflphone-client-gnome/src/dbus/dbus.c

sflphone-client-gnome/src/dbus/dbus.h

sflphone-common/src/dbus/callmanager-introspec.xml

sflphone-common/src/dbus/callmanager.cpp

sflphone-common/src/dbus/callmanager.h

sflphone-common/src/managerimpl.cpp

sflphone-common/src/managerimpl.h