title: symfony2 ("There is no "cssrewrite" filter.") in "base.html.twig"
body: <p>Small question. I'm learning the symfony2 framework and I get this error</p>
  
  <blockquote>
    <p>An exception has been thrown during the compilation of a template ("There is no "cssrewrite" filter.") in "base.html.twig". </p>
  </blockquote>
  
  <p>Do I have to manually activate it somewhere or went there something wrong with the installation processes (running it on windows). Can someone point me in the right direction?</p>
  
  <p>twig:</p>
  
  <pre><code>{% block stylesheets %}
              {% stylesheets filter='cssrewrite'
          '%kernel.root_dir%/../vendor/twbs/bootstrap/dist/css/bootstrap.css'
          '%kernel.root_dir%/../vendor/twbs/bootstrap/dist/css/bootstrap-theme.css'
          '@blogBundle/Resources/public/css/costom.css'
              %}
              &lt;link rel="stylesheet" href="{{ asset_url }}"/&gt;
              {% endstylesheets%}
          {% endblock %}
      framework:
          secret: xxxxxxxxxx
          router:        { resource: "%kernel.root_dir%/config/routing.yml" }
          templating:    { engines: ['twig', 'php'] }
  </code></pre>
  
  <p>config.yml file</p>
  
  <pre><code>imports:
      - { resource: parameters.yml }
      - { resource: security.yml }
      - { resource: services.yml }
      - { resource: "@blogBundle/Resources/config/services.yml" }
  
  # Put parameters here that don't need to change on each machine where the app is deployed
  # http://symfony.com/doc/current/best_practices/configuration.html#application-related-configuration
  parameters:
      locale: en
  
  framework:
      #esi:             ~
      #translator:      { fallbacks: ["%locale%"] }
      secret:          "%secret%"
      router:
          resource: "%kernel.root_dir%/config/routing.yml"
          strict_requirements: ~
      form:            ~
      csrf_protection: ~
      validation:      { enable_annotations: true }
      #serializer:      { enable_annotations: true }
      templating:
          engines: ['twig']
          #assets_version: SomeVersionScheme
      default_locale:  "%locale%"
      trusted_hosts:   ~
      trusted_proxies: ~
      session:
          # handler_id set to null will use default session handler from php.ini
          handler_id:  ~
      fragments:       ~
      http_method_override: true
  
  # Twig Configuration
  twig:
      debug:            "%kernel.debug%"
      strict_variables: "%kernel.debug%"
  
  # Doctrine Configuration
  doctrine:
      dbal:
          driver:   pdo_mysql
          host:     "%database_host%"
          port:     "%database_port%"
          dbname:   "%database_name%"
          user:     "%database_user%"
          password: "%database_password%"
          charset:  UTF8
          # if using pdo_sqlite as your database driver:
          #   1. add the path in parameters.yml
          #     e.g. database_path: "%kernel.root_dir%/data/data.db3"
          #   2. Uncomment database_path in parameters.yml.dist
          #   3. Uncomment next line:
          #     path:     "%database_path%"
  
      orm:
          auto_generate_proxy_classes: "%kernel.debug%"
          naming_strategy: doctrine.orm.naming_strategy.underscore
          auto_mapping: true
  
  # Swiftmailer Configuration
  swiftmailer:
      transport: "%mailer_transport%"
      host:      "%mailer_host%"
      username:  "%mailer_user%"
      password:  "%mailer_password%"
      spool:     { type: memory }
  </code></pre>