Use plain integers as the first column
Use plain integers as the first column

Using integers makes the sorting much easier and simplifies the code
setting up the dict.

djmitche/buildbot-infra,seankelly/buildbot-infra,djmitche/buildbot-infra,djmitche/buildbot-infra,buildbot/buildbot-infra,seankelly/buildbot-infra,seankelly/buildbot-infra,buildbot/buildbot-infra,ewongbb/buildbot-infra,buildbot/buildbot-infra,ewongbb/buildbot-infra