This code is well covered anyway, and the test is causing trouble
since emitting the featureCreated event is causing side effects through
other listeners.
* Add Travis postgresql setup.
* Replace "db mocks" with a before hook that creates the same data
through the HTTP API.
* Reset DB and re-create all fixtures for each test. We'll need
something better here.
* CAVEAT: no concept of a dev vs test database. Running tests will
clear data from the currently configured database.
