Symfony2 installation with composer

Installation of Symfony2 using composer. This includes a selection of
open source bundles.
Added UserBundle including fixtures.

- Added Babijn\UserBundle
- Configured fixtures for two basic users
Cleaned up UserBundle

Removed several folders and files.
Added recipes bundle and entities

- Added FrontendBundle
- Added RecipeBundle with 3 entities
- Updated User class with documentation
Added fixtures for RecipeBundle

- Fixtures added for kitchen and recipe type
- Fixtures not completed for recipe (needs changes to entity)