Added stub for a bundle that provides the othe rundles access to the db. It contains a controller that allows the admin to manage the database.
Added Doctrine support.
Added default page title. Not all subtemplates should have to provide one.
Reporting database status when there is an error. This is WIP, next steps include:

  - Investigate if there is Doctrine events or exceptions thrown by the Doctrine library, that should trigger a redirect to the status page.
  - Secure the admin area to a role that represents site admins.
  - Create a function to call on severe database errors that lead a site admin to the status page, an ordinary user to an error page of the sort "we are terribly sorry, we messed up, it's not your fault". Wire up that function to event listeners, if appropriate.