Register templates at a custom namespace too
Register templates at a custom namespace too

This makes it possible for a person to override a template
(by putting a directory on the path that matches it)
and to allow that same template to extend the original by doing:

    {% extends '@DevtureUserBundle/DevtureUserBundle/template.html.twig' %}

That's a solution to the so-called: "Overriding a Template that also extends itself" problem

devture/silex-user-bundle,devture/silex-user-bundle