What's the URL of the page containing the problem?
/api/json/*
What steps will reproduce the problem?
1. Install Review Board but do not properly configure it.
2. Attempt an API call
What is the expected output? What do you see instead?
Instead of getting some valid response back, a "No JSON object could be
decoded" exception is thrown in Review Board, as it's trying to parse the
page saying how to properly set up Review Board.
We should instead hard-code an error response saying that the site is not
set up yet.