CHUI-51 WIP notifications routig code cleanup

indra/llui/llnotifications.cpp

indra/llui/llnotifications.h

indra/llui/llnotificationtemplate.h

indra/newview/llbrowsernotification.cpp

indra/newview/llchiclet.cpp

indra/newview/llfloaternotificationsconsole.cpp

indra/newview/llfloateroutbox.cpp

indra/newview/llfloateroutbox.h

indra/newview/llimhandler.cpp

indra/newview/llnearbychathandler.cpp

indra/newview/llnearbychathandler.h

indra/newview/llnotificationalerthandler.cpp

indra/newview/llnotificationgrouphandler.cpp

indra/newview/llnotificationhandler.h

indra/newview/llnotificationhandlerutil.cpp

indra/newview/llnotificationhinthandler.cpp

indra/newview/llnotificationmanager.cpp

indra/newview/llnotificationmanager.h

indra/newview/llnotificationofferhandler.cpp

indra/newview/llnotificationscripthandler.cpp