old_contents: // Turn off appcache on Safari. Apparently Safari 7's AppCache is
  // totally busted. In particular, this fact combined with our
  // "RELOAD_SAFETYBELT" strategy causes infinite reloads in Safari at
  // times.
  //
  // See http://stackoverflow.com/questions/22888945/safari-7-application-cache-does-not-work
  if (Meteor.isServer) {
    Meteor.AppCache.config({
      safari: false
    });
  }
  
new_contents: if (Meteor.isServer) {
    Meteor.AppCache.config({
      // Turn off appcache on Safari. Apparently Safari 7's AppCache is totally
      // busted. In particular, this fact combined with our "RELOAD_SAFETYBELT"
      // strategy causes infinite reloads in Safari at times.
      //
      // See http://stackoverflow.com/questions/22888945/safari-7-application-cache-does-not-work
      safari: false,
      // ... and Firefox too.  See eg https://github.com/meteor/meteor/issues/3248
      firefox: false
    });
  }
  
subject: disable appcache on Firefox