title: angularJS translation with pascalprecht.translate - language files
body: <p>I use pascalprecht.translate for translating and I have a problem with the properties- filenames. 
  I use the following configuration: </p>
  
  <pre><code>(function() {
  'use strict';
  
  angular
      .module('aposoft.lang')
      .config(configure);
  
  configure.$inject =['$translateProvider'];
  
  function configure($translateProvider) {
      $translateProvider.useStaticFilesLoader({
          files: [{
              prefix: 'app/lang/i18n/lang-',
              suffix: '.json'
          }]
      });
  
      $translateProvider.useSanitizeValueStrategy('escape');
      $translateProvider.determinePreferredLanguage();
      $translateProvider.fallbackLanguage('en');
  }
  </code></pre>
  
  <p>})();</p>
  
  <p>and the problem is that I need the property- filename <strong>lang-en_EN.json</strong> for Firefox and <strong>lang-en.json</strong> e.g. for Chrome. </p>
  
  <p>My question now would be how to prevent of having two i18n properties files and only have one file?</p>