Fix pylint violations from #2129
Added stub XQueue server to bok_choy test suite.

Added feedback check for AI-assessment test

Added peer assessment feedback test
Pin subunit and testtools libraries to prevent test failures after release of these libraries on 1/29/14
Merge pull request #2351 from edx/will/pin-test-lib-versions

Pin test lib versions (fix to test failures in master)
Merge pull request #2239 from edx/will/ora-ai-and-peer-tests

ORA AI and Peer acceptance tests
Merge pull request #2171 from cpennington/pylint-cleanup

Fix pylint violations from #2129