[opencoweb/coweb] 5822af: Require Tornado 2.4

[GitHub]

Branch: refs/heads/master
Home: https://github.com/opencoweb/coweb
Commit: 5822afaa46e3369eb6970d44563172bf7f7bf92d
https://github.com/opencoweb/coweb/commit/5822afaa46e3369eb6970d44563172bf7f7bf92d
Author: Chris Cotter <cco...@utexas.edu>
Date: 2013-07-07 (Sun, 07 Jul 2013)

Changed paths:
M servers/python/coweb/admin.py
M servers/python/setup.py

Log Message:
-----------
Require Tornado 2.4

Tornado 3 breaks OCW, so until the issues can be addressed, use Tornado
2.4