At least the zephyr.humbughq.com case is one our users might find useful. I imagine we'll end up hiding --site once we integrate the zephyr and main site tornado servers. (imported from commit a3a28492cf3f32b78eab6bbd48ba66be2f38a5f2)
(imported from commit 9f93050f988549dc363f5a7c798c8a9fa1c01d29)
(imported from commit 64bf22298452a436d0aec796973a77f10d5e0bf9)
This requires a zephyr_mirror deployment when it is pushed to prod. (imported from commit 6543441fb264b518f8705d7989d068a1d50ce5d6)