switch the encryption secret from localStorage to IndexedDB (because localStorage gets lost so often)

sw_scripts/additional-scripts.js

@@ -115,7 +115,7 @@ self.addEventListener("push", function (event) {
 self.addEventListener("message", (event) => {
   logConsoleAndDb("Service worker got a message...", event);
   if (event.data && event.data.type === "SEND_LOCAL_DATA") {
-    self.secret = event.data.data;
+    self.secret = event.data.data; // used in safari-notifications.js to decrypt the account identity
     event.ports[0].postMessage({ success: true });
   }
   logConsoleAndDb("Service worker posted a message.");