Revert "Attempt to fix router registration for whitehall-rummager."
Revert "Attempt to fix router registration for whitehall-rummager."

This reverts commit ae53eb8bf704634450cf51755059e847a807e333.

I'm backing out the changes I made to support a whitehall instance of
rummager - I now have a different plan and want to ensure I haven't
broken anything for the citizen app.

theodi/rummager,theodi/rummager,alphagov/rummager,alphagov/rummager