Stuff

Removed statusBarText stuff from all the pages and replaced it with a
more reliable implementation. Added chatstate support. Work-in-progress
new Chat/Archive page. Tried to fix new lines in old chat page but it
failed. Removed useless messageReceivedSlot() call in MyXmppClient.
Reviewed code for sending messages in MyXmppClient. Changed some other
stuff too, not sure which one though, it was really a long time ago.