CHUI-722 Fixed! Add ? button to titlebar on floaters: Conversation Log, Nearby...

CHUI-722 Fixed! Add ? button to titlebar on floaters: Conversation Log, Nearby Chat History, and IM History

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

@@ -3,6 +3,7 @@
 <floater
  can_resize="true"
  positioning="cascading"
+ help_topic="conversation_log"
  height="200"
  min_height="100"
  min_width="230"

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

@@ -3,6 +3,7 @@
  legacy_header_height="18"
  can_resize="true"
  default_tab_group="1"
+ help_topic="conversation_preview"
  height="391"
  layout="topleft"
  min_height="243"