Fix: Notification popup is broken

_locales/en_US/messages.json

 {
   "add": {
     "description": "This is the label for the 'Add' buttons.",
     "message": "Add"
   },
   "add_domain_button": {
     "message": "Add domain"
   },
   "add_filter_button": {
     "message": "Add filter"
@@ skipping 81 matching lines @@
   },
   "last_updated_at_today": {
     "description": "e.g. Last updated at 3:00pm today",
     "message": "Last updated at $time$ today",
     "placeholders": {
       "time": {
         "content": "$1"
       }
     }
   },
+  "notification_with_buttons": {
+    "message": "Click 'OK' to open all links in this notification."
+  },
+  "notification_without_buttons": {
+    "message": "Click on the notification to open all links in it."
+  },
   "options": {
     "message": "Adblock Plus Options"
   },
   "options_short": {
     "description": "Link to the options page from the popup balloon.",
     "message": "Options"
   },
   "out_of_date_lists": {
     "message": "Out-of-date lists are updated periodically."
   },
@@ skipping 60 matching lines @@
     "message": "Please choose a filter subscription from the list:"
   },
   "update_now": {
     "message": "Update now"
   },
   "whitelisted_domains": {
     "description": "This is a tab heading.",
     "message": "Whitelisted domains"
   }
 }