Sync notification working, need to be tested
diff --git a/views/ngXosLib/xosHelpers/spec/services/helpers/user-prefs.test.js b/views/ngXosLib/xosHelpers/spec/services/helpers/user-prefs.test.js
new file mode 100644
index 0000000..4c76484
--- /dev/null
+++ b/views/ngXosLib/xosHelpers/spec/services/helpers/user-prefs.test.js
@@ -0,0 +1,113 @@
+/**
+ * © OpenCORD
+ *
+ * Created by teone on 5/25/16.
+ */
+
+(function () {
+  'use strict';
+  let service;
+  let cookies = {
+    xosUserPrefs: JSON.stringify({test: true})
+  };
+
+  const cookieMock = {
+    get: (name) => {
+      return cookies[name]
+    },
+    put: (name, value) => {
+      cookies[name] = value
+    }
+  };
+
+  describe('The xos.helper module', function(){
+
+    describe('The XosUserPrefs service', () => {
+
+      // load the application module
+      beforeEach(module('xos.helpers', ($provide) => {
+        $provide.value('$cookies', cookieMock);
+      }));
+
+      // inject the cartService
+      beforeEach(inject(function (_XosUserPrefs_) {
+        // The injector unwraps the underscores (_) from around the parameter names when matching
+        service = _XosUserPrefs_;
+        spyOn(cookieMock, 'put').and.callThrough();
+      }));
+
+      it('should exists and have methods', () => {
+        expect(service).toBeDefined();
+        expect(service.getAll).toBeDefined();
+        expect(service.setAll).toBeDefined();
+        expect(service.getSynchronizerNotificationStatus).toBeDefined();
+        expect(service.setSynchronizerNotificationStatus).toBeDefined();
+      });
+
+      describe('the getAll method', () => {
+        it('should return all the stored prefs', () => {
+          let prefs = service.getAll();
+          expect(prefs).toEqual(JSON.parse(cookies.xosUserPrefs));
+        });
+      });
+
+      describe('the setAll method', () => {
+        it('should override all preferences', () => {
+          service.setAll({test: true, updated: true});
+          expect(JSON.parse(cookies.xosUserPrefs)).toEqual({test: true, updated: true});
+        });
+      });
+
+      describe('the synchronizers status', () => {
+        let syncNotification;
+        beforeEach(() => {
+          syncNotification = {
+            synchronizers: {
+              notification: {
+                first: true,
+                second: false
+              }
+            }
+          }
+          cookies.xosUserPrefs = JSON.stringify(syncNotification);
+        });
+
+        describe('the getSynchronizerNotificationStatus method', () => {
+          it('should return notification status for all synchronizers', () => {
+            expect(service.getSynchronizerNotificationStatus()).toEqual(syncNotification.synchronizers.notification);
+          });
+
+          it('should return notification status for a single synchronizers', () => {
+            expect(service.getSynchronizerNotificationStatus('first')).toEqual(syncNotification.synchronizers.notification.first);
+            expect(service.getSynchronizerNotificationStatus('second')).toEqual(syncNotification.synchronizers.notification.second);
+          });
+        });
+
+        describe('the setSynchronizerNotificationStatus', () => {
+          
+          it('should throw an error if called without synchronizer name', () => {
+            function wrapper (){
+              service.setSynchronizerNotificationStatus();
+            }
+            expect(wrapper).toThrowError('[XosUserPrefs] When updating a synchronizer is mandatory to provide a name.');
+          });
+
+          it('should update a synchronizer notification status', () => {
+            service.setSynchronizerNotificationStatus('second', true);
+            expect(service.getSynchronizerNotificationStatus('second')).toEqual(true);
+            expect(service.getSynchronizerNotificationStatus('first')).toEqual(true);
+
+            // should persist the change
+            expect(cookieMock.put).toHaveBeenCalledWith('xosUserPrefs', '{"synchronizers":{"notification":{"first":true,"second":true}}}');
+          });
+
+          it('should handle empty cookies', () => {
+            cookies.xosUserPrefs = '';
+            service.setSynchronizerNotificationStatus('second', true);
+            expect(service.getSynchronizerNotificationStatus('second')).toEqual(true);
+          });
+        });
+      });
+    });
+  });
+})();
\ No newline at end of file
diff --git a/views/ngXosLib/xosHelpers/src/services/helpers/user-prefs.service.js b/views/ngXosLib/xosHelpers/src/services/helpers/user-prefs.service.js
new file mode 100644
index 0000000..27edf7f
--- /dev/null
+++ b/views/ngXosLib/xosHelpers/src/services/helpers/user-prefs.service.js
@@ -0,0 +1,95 @@
+(function () {
+  
+  angular.module('xos.helpers')
+
+  /**
+  * @ngdoc service
+  * @name xos.helpers.XosUserPrefs
+  * @description
+  * This service is used to store the user preferences in cookies, so that they survive to page changes.
+  * The structure of the user preference is:
+  * ```
+  * {
+  *   synchronizers: {
+  *     notification: {
+  *       'volt': boolean,
+  *       'openstack': boolean,
+  *       ...
+  *     }
+  *   }
+  * }
+  * ```
+  **/
+
+  .service('XosUserPrefs', function($cookies){
+
+    let userPrefs = $cookies.get('xosUserPrefs') ? JSON.parse($cookies.get('xosUserPrefs')) : {};
+
+    /**
+    * @ngdoc method
+    * @name xos.helpers.XosUserPrefs#getAll
+    * @methodOf xos.helpers.XosUserPrefs
+    * @description
+    * Return all the user preferences stored in cookies
+    * @returns {object} The user preferences
+    **/
+    this.getAll = () => {
+      userPrefs = $cookies.get('xosUserPrefs') ? JSON.parse($cookies.get('xosUserPrefs')) : {};
+      return userPrefs;
+    };
+
+    /**
+    * @ngdoc method
+    * @name xos.helpers.XosUserPrefs#setAll
+    * @methodOf xos.helpers.XosUserPrefs
+    * @description
+    * Override all user preferences
+    * @param {object} prefs The user preferences
+    **/
+    this.setAll = (prefs) => {
+      $cookies.put('xosUserPrefs', JSON.stringify(prefs));
+    };
+
+    /**
+    * @ngdoc method
+    * @name xos.helpers.XosUserPrefs#getSynchronizerNotificationStatus
+    * @methodOf xos.helpers.XosUserPrefs
+    * @description
+    * Return the synchronizer notification status, if name is not provided return the status for all synchronizers
+    * @param {string=} prefs The synchronizer name
+    * @returns {object | string} The synchronizer status
+    **/
+    this.getSynchronizerNotificationStatus = (name = false) => {
+      if(name){
+        return this.getAll().synchronizers.notification[name];
+      }
+      return this.getAll().synchronizers.notification;
+    };
+
+    /**
+    * @ngdoc method
+    * @name xos.helpers.XosUserPrefs#setSynchronizerNotificationStatus
+    * @methodOf xos.helpers.XosUserPrefs
+    * @description
+    * Update the notification status for a single synchronizer
+    * @param {string} name The synchronizer name
+    * @param {boolean} value The notification status (true means that it has been sent)
+    **/
+    this.setSynchronizerNotificationStatus = (name = false, value) => {
+      if(!name){
+        throw new Error('[XosUserPrefs] When updating a synchronizer is mandatory to provide a name.')
+      }
+
+      let cookies = this.getAll();
+
+      if(!cookies.synchronizers){
+        cookies.synchronizers = {
+          notification: {}
+        }
+      }
+
+      cookies.synchronizers.notification[name] = value;
+      this.setAll(cookies);
+    }
+  });
+})();
\ No newline at end of file
diff --git a/views/ngXosViews/synchronizerNotifier/bower.json b/views/ngXosViews/synchronizerNotifier/bower.json
index 342b8f3..8b0eb12 100644
--- a/views/ngXosViews/synchronizerNotifier/bower.json
+++ b/views/ngXosViews/synchronizerNotifier/bower.json
@@ -14,8 +14,7 @@
     "test",
     "tests"
   ],
-  "dependencies": {
-  },
+  "dependencies": {},
   "devDependencies": {
     "jquery": "2.1.4",
     "angular-mocks": "1.4.7",
@@ -27,6 +26,7 @@
     "lodash": "~4.11.1",
     "bootstrap-css": "3.3.6",
     "angular-chart.js": "~0.10.2",
-    "d3": "~3.5.17"
+    "d3": "~3.5.17",
+    "angular-recursion": "~1.0.5"
   }
 }
diff --git a/views/ngXosViews/synchronizerNotifier/src/css/main.css b/views/ngXosViews/synchronizerNotifier/src/css/main.css
index b95bde2..88a08e7 100644
--- a/views/ngXosViews/synchronizerNotifier/src/css/main.css
+++ b/views/ngXosViews/synchronizerNotifier/src/css/main.css
@@ -3,7 +3,8 @@
   #xosSynchronizerNotifier .alert {
     margin-bottom: 0px !important; }
   #xosSynchronizerNotifier .sync-status-container {
-    position: relative; }
+    position: relative;
+    z-index: 200; }
   #xosSynchronizerNotifier .notification-panel {
     position: absolute;
     width: 200px; }
diff --git a/views/ngXosViews/synchronizerNotifier/src/index.html b/views/ngXosViews/synchronizerNotifier/src/index.html
index d8bc502..cb9b7b5 100644
--- a/views/ngXosViews/synchronizerNotifier/src/index.html
+++ b/views/ngXosViews/synchronizerNotifier/src/index.html
@@ -26,6 +26,7 @@
 <script src="vendor/Chart.js/Chart.js"></script>
 <script src="vendor/angular-chart.js/dist/angular-chart.js"></script>
 <script src="vendor/d3/d3.js"></script>
+<script src="vendor/angular-recursion/angular-recursion.js"></script>
 <!-- endbower -->
 <!-- endjs -->
 <!-- inject:js -->
diff --git a/views/ngXosViews/synchronizerNotifier/src/js/main.js b/views/ngXosViews/synchronizerNotifier/src/js/main.js
index 301345c..03c10be 100644
--- a/views/ngXosViews/synchronizerNotifier/src/js/main.js
+++ b/views/ngXosViews/synchronizerNotifier/src/js/main.js
@@ -79,7 +79,7 @@
         this.sendEvents(diags);
       });
     }
-  }, 10000);
+  }, 6 * 1000);
 })
 .directive('syncStatus', function() {
   return {
@@ -88,31 +88,31 @@
     bindToController: true,
     controllerAs: 'vm',
     templateUrl: 'templates/sync-status.tpl.html',
-    controller: function($log, $rootScope, Diag, xosNotification){
+    controller: function($log, $rootScope, Diag, xosNotification, XosUserPrefs){
       Diag.start();
       this.showNotificationPanel = true;
       this.synchronizers = {};
 
-      const notified = {};
-
       this.showNoSync = true;
 
       $rootScope.$on('diag', (e, d) => {
         this.synchronizers[d.name] = d;
 
+
         // if errored
         if(!d.status){
+          console.log(d.name, XosUserPrefs.getSynchronizerNotificationStatus(d.name));
           // and not already notified
-          if(!notified[d.name]){
-            xosNotification.notify('CORD Synchronizer Error', {
-              icon: '/xos/core/static/cord-logo.png',
-              body: `The ${d.name} synchronizer has stopped.`
+          if(!XosUserPrefs.getSynchronizerNotificationStatus(d.name)){
+            xosNotification.notify('CORD Synchronizer', {
+              icon: '/static/cord-logo.png',
+              body: `The ${d.name} synchronizer has not performed actions in the last 15 minutes.`
             });
           }
-          notified[d.name] = true;
+          XosUserPrefs.setSynchronizerNotificationStatus(d.name, true);
         }
         else {
-          notified[d.name] = false;
+          XosUserPrefs.setSynchronizerNotificationStatus(d.name, false);
         }
 
         // hide list if empty
diff --git a/views/ngXosViews/synchronizerNotifier/src/sass/main.scss b/views/ngXosViews/synchronizerNotifier/src/sass/main.scss
index 273131a..d101d76 100644
--- a/views/ngXosViews/synchronizerNotifier/src/sass/main.scss
+++ b/views/ngXosViews/synchronizerNotifier/src/sass/main.scss
@@ -10,6 +10,7 @@
 
   .sync-status-container {
     position: relative;
+    z-index: 200;
   }
 
   .notification-panel {