Chris is an alumnus

Actually another tweak to get Teamcity going... now with 'Default branch:'
set to 'refs/heads/master'

https://teamcity.gutools.co.uk/admin/editVcsRoot.html?action=editVcsRoot&vcsRootId=membership_frontend&editingScope=editProject
Merge pull request #4 from guardian/more-teamcity

Another tweak to get Teamcity going...