Added TODO CHANGEFAILED:
-- Called when someone requested a change and it failed
Added TODO CHANGED:
-- Need to update callinput panel and callpanel with new information
across all clients
BUG FIX: Misnamed and missing string
CallManagerPanel.receivedPrivateChatRequest
Moved CHANGEFAILED to private chat so that only the sender client has to
process the failed message
BUG FIX: Spelling mistake
Implemented CHANGEFIELD on CallManagerPanel
TODO: CHANGED still to implement