title: Reject route not translated in JMSi18nRoutingBundle in Symfony2
body: <p>Im using this bundle in my site with Symfony2 and there are some problems with not translated routes.</p>
  
  <p>For example:
  <code>
      <code>http://en.site.com/home -&gt; is correct and it works.</code>
      <code>-http://es.site.com/inicio -&gt; is correct and it works.</code>
  </code>
  Now the problem is here, combining both like:
  <code>
      <code>-es.site.com/home -&gt; not correct but it works.</code>
      <code>-en.site.com/inicio -&gt; not correct but it works.</code>
  </code></p>
  
  <p>The config.yml is:
  <code>
      jms_i18n_routing:
          default_locale: %locale%
          locales: %languages%
          strategy: custom
  </code></p>
  
  <p>NOTE: I have try the strategy: prefix_except_default but I have the same problem. </p>
  
  <p>I dont know all the strategies avaliable for this.</p>
  
  <p>Thanks to all.</p>