chore(registry): bump registry to eb62607
ref(controller): remove several unused settings

The ACCOUNT_* settings were not removed when django-allauth was,
and DEFAULT_BUILD is not referenced anywhere.
ref(controller): remove redundant ALLOWED_HOSTS setting
fix(controller): disallow evil users from creating builds
Merge pull request #2817 from mboersma/controller-cruft

Remove controller settings cruft
Merge pull request #2818 from bacongobbler/you-shall-not-build

fix(controller): disallow evil users from creating builds
Merge pull request #2816 from bacongobbler/bump-registry

chore(registry): bump registry to eb62607