Fix batch (#6248)

* Use the delta plugin data to show the delta in the clock views
* Update Node checks
* Fix disabling the BG alarms for simple alarms
* Load battery and other rare events up to two months back
* Possibly fixes compatibility with ios9 - needs testing
* Unified black and color clock layouts
* Update clock data every 20 seconds
* Update clock time every second
* Fix how CSP policy is set for Helmet, fixes #6260
* Authorization fix for misformatted URLs
* Added unit test for batch upload of CGM entries
* Improved / removed some logging
* Test if user is in read only mode when Nightscout starts and give an error if so

views/index.html

@@ -730,7 +730,7 @@
           reg.addEventListener('updatefound', () => {
             console.log('Service worker update detected');
             reg.update();
-            const newWorker = reg.installing;
+            var newWorker = reg.installing;
             newWorker.addEventListener('statechange', (state) => {
               console.log('New worker state change', state);
               window.location.reload(true);