Merge branch 'rlva/release' into rlva/maintenance

indra/newview/llconversationmodel.cpp

indra/newview/llconversationmodel.h

indra/newview/llfloaterimcontainer.cpp

indra/newview/llfloaterimsessiontab.h

indra/newview/llimprocessing.cpp

indra/newview/llparticipantlist.cpp

indra/newview/llparticipantlist.h

indra/newview/rlvcommon.cpp

indra/newview/rlvcommon.h

indra/newview/rlvdefines.h

indra/newview/rlvhandler.cpp

indra/newview/skins/default/xui/en/rlva_strings.xml