Modify the test cluster plugin to allow whitelisted users to bypass the
student lockout

add a REST.text method to handle making non-JSON calls to AOBRestServer

Add the maillist_membership URL to the SFU API

add a SFU::User::maillist method to the SFU API

Modify test cluster plugin to allow whitelisted users to bypass the student lockout
Merge pull request #144 from grahamb/testcluster

Modify the test cluster plugin to allow whitelisted users to bypass the student lockout