Some test configs and data for Galaxy Zoo CANDELS

At the time it seemed sensible to fork the repo, especially as there was an existing galaxy zoo branch. Maybe it would be more sensible for this to be a branch of the original repo.  I don't mind.  This pull request is mostly to let @edwinrobots and @willettk know that pyIBCC at least runs on data for a single Galaxy Zoo question. It even appears to do something sensible!  A starting point, at least.  See the README for a bit more info.

p.s. I also made the output file neater and made sure we avoid unintentional integer arrays, so you might like to cherry-pick b2385d5 into master.