make color and font affecting both nearby chat and toasts

indra/llui/lluicolortable.cpp

indra/newview/CMakeLists.txt

indra/newview/llchathistory.cpp

indra/newview/llchathistory.h

indra/newview/llchatitemscontainerctrl.cpp

indra/newview/llchatitemscontainerctrl.h

indra/newview/llimfloater.cpp

indra/newview/llnearbychat.cpp

indra/newview/llnearbychat.h

indra/newview/llnearbychathandler.cpp

indra/newview/llnotificationtiphandler.cpp

indra/newview/llviewerchat.cpp

indra/newview/llviewerchat.h

indra/newview/llviewermessage.cpp