Disables new instance creation. The "new instance" page isn't linked to from anywhere, but if it's accessed directly then you will be redirected to /instance_creation_disabled, which looks like this:
A small comment about removing the dead code, and there's one other test failure (it's still expecting the "new instance" link to be there) - otherwise, looks good to me :+1:
Adds a banner linking to Tom's mailing list post about development stopping on PopIt.
Disables new instance creation. The "new instance" page isn't linked to from anywhere, but if it's accessed directly then you will be redirected to
/instance_creation_disabled
, which looks like this: