Overview for behat

Recently while debugging some tests that were failing on our build server, but passing locally, we needed to see the state of the Database for the application when a test had failed - using Behat hooks and the Symfony Process component, here's how we did it.

We've found ourselves needing some higher-level tests for some emails that were being sent recently (via a command that's run regularly from a cron) - here's how we did it!