Fix page titles

Fixes #949

static/js/app.js

@@ -74,8 +74,6 @@ quayApp.config(['$tooltipProvider', function ($tooltipProvider) {
 
 // Configure the routes.
 quayApp.config(['$routeProvider', '$locationProvider', 'pages', function($routeProvider, $locationProvider, pages) {
-  var title = window.__config['REGISTRY_TITLE'] || 'Quay';
-
   $locationProvider.html5Mode(true);
 
   // WARNING WARNING WARNING

static/js/services/meta-service.js

@@ -12,7 +12,7 @@ angular.module('quay').factory('MetaService', ['$interpolate', 'Config', '$rootS
 
     var inter = $interpolate(expr, true, null, true);
     if (!inter) {
-      return null;
+      return expr.toString();
     }
 
     return inter(page.scope);