Get dynamic title support working

static/js/services/meta-service.js

@@ -4,15 +4,33 @@
 angular.module('quay').factory('MetaService', ['$interpolate', 'Config', '$rootScope', '$interval',
     function($interpolate, Config, $rootScope, $interval) {
   var metaService = {};
+  var intervals = [];
 
   var interpolate = function(page, expr, callback) {
-    $rootScope.$watch(page.scope, function() {
+    var previous = '';
+
+    var currentInterval = $interval(function() {
       var inter = $interpolate(expr, true, null, true);
-      callback(inter(page.scope));
+      var result = inter(page.scope)
-    });
+
+      if (result != previous) {
+        $interval.cancel(currentInterval);
+      }
+
+      previous = result;
+      callback(result);
+    }, 500);
+
+    intervals.push(currentInterval);
   };
 
   var initial = function(value, default_value, callback) {
+    for (var i = 0; i < intervals.length; ++i) {
+      $interval.cancel(intervals[i]);
+    }
+
+    intervals = [];
+
     if (!value) {
       callback(default_value);
       return;