Fix "Add email" button in main global notification settings

changedetectionio/static/js/notifications.js

@@ -4,7 +4,7 @@ $(document).ready(function() {
     e.preventDefault();
     email = prompt("Destination email");
     if(email) {
-      var n = $("#notification_urls");
+      var n = $(".notification-urls");
       var p=email_notification_prefix;
       $(n).val( $.trim( $(n).val() )+"\n"+email_notification_prefix+email );
     }

changedetectionio/templates/_common_fields.jinja

@@ -22,7 +22,6 @@
                             <a id="send-test-notification" class="pure-button button-secondary button-xsmall" style="font-size: 70%">Send test notification</a>
 {% if emailprefix %}
                             <a id="add-email-helper" class="pure-button button-secondary button-xsmall" style="font-size: 70%">Add email</a>
-
 {% endif %}
                         </div>
                         <div id="notification-customisation" class="pure-control-group">