title: AngularJS : Setting languages in angular-translate from Controller or Service
body: <p>I am interested in using angular-translate.</p>
  
  <p>Due to a lot of setup calls that happen initially on startup, I cannot provide the language json during config. Nor is it possible to use the async loader.
  I need to be able to specify the languages from a controller or service at a later point.</p>
  
  <p><code>$translateProvider.translations(.., ...)</code> is the call to use, but <code>$translateProvider</code> isn't available in controllers or services, but seemingly only at config.</p>
  
  <p><code>$translate</code> doesn't seem to have the ability to load a language JSON.</p>
  
  <p>Is there any workaround?</p>