Update radio programs

* Update entities (new Picture embedded entity)
* Separate production initialization and development entities
Update packages

  - Removing symfony/icu (v1.2.2)
  - Removing twig/twig (v1.16.0)
  - Installing twig/twig (v1.16.2)

  - Removing twig/extensions (v1.1.0)
  - Installing twig/extensions (v1.2.0)

  - Removing symfony/symfony (v2.5.5)
  - Installing symfony/symfony (v2.5.6)

  - Removing kriswallsmith/assetic (v1.1.2)
  - Installing kriswallsmith/assetic (v1.2.0)

  - Removing symfony/assetic-bundle (v2.3.0)
  - Installing symfony/assetic-bundle (v2.5.0)

  - Removing sensio/distribution-bundle (v3.0.6)
  - Installing sensio/distribution-bundle (v3.0.7)

  - Removing liip/imagine-bundle (1.0.6)
  - Installing liip/imagine-bundle (1.1.0)

  - Removing nelmio/alice (1.7.1)
  - Installing nelmio/alice (1.7.2)

  - Removing sebastian/environment (1.1.0)
  - Installing sebastian/environment (1.2.0)

  - Removing doctrine/instantiator (1.0.3)
  - Installing doctrine/instantiator (1.0.4)

  - Removing phpunit/phpunit (4.3.1)
  - Installing phpunit/phpunit (4.3.4)

  - Removing doctrine/dbal (v2.4.2)
  - Installing doctrine/dbal (v2.4.3)

  - Removing knplabs/knp-components (1.3.0)
  - Installing knplabs/knp-components (1.3.1)

  - Removing fabpot/goutte (v1.0.6)
  - Installing fabpot/goutte (v1.0.7)

  - Updating friendsofsymfony/user-bundle dev-master (3be6e7b => 9714a92)

  - Updating behat/symfony2-extension dev-master (f9030db => 3a7b269)