Feedback bar for showing response to user actions

Fixes #215

static/js/directives/ui/feedback-bar.js

@@ -0,0 +1,35 @@
+/**
+ * An element which displays a feedback bar when an action has been taken.
+ */
+angular.module('quay').directive('feedbackBar', function () {
+  var directiveDefinitionObject = {
+    priority: 0,
+    templateUrl: '/static/directives/feedback-bar.html',
+    replace: false,
+    transclude: true,
+    restrict: 'C',
+    scope: {
+      'feedback': '=feedback'
+    },
+    controller: function($scope, $element, AvatarService, Config, UIService, $timeout) {
+      $scope.viewCounter = 0;
+
+      $scope.$watch('feedback', function(feedback) {
+        if (feedback) {
+          $scope.viewCounter++;
+        } else {
+          $scope.viewCounter = 0;
+        }
+      });
+
+      $($element).find('.feedback-bar-element')
+                 .on('webkitAnimationEnd oanimationend oAnimationEnd msAnimationEnd animationend',
+        function(e) {
+          $scope.$apply(function() {
+            $scope.viewCounter = 0;
+          });
+        });
+    }
+  };
+  return directiveDefinitionObject;
+});