Fixed the scroll-to-bottom bug for chat messages.
Merge pull request #1 from swestwood/fix-chat-scroll

Fixed the scroll-to-bottom bug for chat messages.
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' of https://github.com/resalire/cs247-2104-p3
Merge branch 'master' of https://github.com/resalire/cs247-2104-p3 into p2