Code review comment for lp:~al-maisan/launchpad/xx-select-job-506617

We went through this together, resulting in a few very small changes (mainly naming).

I'm approving this branch, but one issue remains open: the new interface, IBuildFarmCandidateJobSelection, plays a role that seems to fit well in the one I added in my branch lp:~jtv/launchpad/bug-500110 called ISpecificBuildFarmJobClass. Consider merging these two interfaces; it may also help prevent conflicts since your branch is going into db-devel whereas mine is for devel.

Jeroen