Without this, searches for negative of `fits` or `species` would crash, bc somewhere Rails set the default SQL mode to be stricter than before. This just sets it back!
We gitignored it a long time ago as the way to hide our db secrets, but that's not how we manage them anymore! (Or, well, we haven't done production deployment with this new setup yet, but you get the point.)
This helps clarify what the database config oughta look like!
