Support controllers out of bundles
feature #293 Support controllers out of bundles (elnur)

This PR was squashed before being merged into the 3.0.x-dev branch (closes #293).

Discussion
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Support controllers out of bundles

Need this to support [bundleless application code][1]. Currently using [my own bundle][2] for that, but would be nice to have this in the bundle itself.

[1]: http://elnur.pro/symfony-without-bundles/
[2]: https://github.com/elnur/ElnurTemplateGuesserBundle

Commits
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664b787 Support controllers out of bundles