Delete alerts on logout

Author: pchampclos

app/client/admin/js/alert/AlertApp.js

@@ -70,6 +70,9 @@
           }, timeout);
 
         $rootScope.alerts.push(alert);
+      },
+      closeAll: function() {
+        $rootScope.alerts = [];
       }
     };
     return alertService;

app/client/admin/js/ov/MainController.js

@@ -44,6 +44,7 @@
       applicationService.destroy();
       userService.destroy();
       entityService.deleteCache();
+      alertService.closeAll();
       $location.path('/login');
     }