Pouchdb WebSQL Sync

I have a HTML5 Web-Application based on HTML5/Javascript and WebSQL. I'd liked to add a self-hosted cloud service for my webapp. This qebapp is Offline-first. But the user should have the option to sync this local WebSQL Databse with Cloud via own account with pouchdb/couchdb. So you have to set up a Cloud-Service with Backend with User-Authentication for user accounts. User-Management on Webpage ------------------------------------------------------ 1. Registration form Fist Name Last Name Email address (also for Login) Password After registration the user should get a e-mail with login details. 2. Login form with Email address and passwort 3. Logout 4. Password change 5. Passwort reset (different html pages) Sync ------------------------------------------------------ On my HTML5 Mobile App: User also can log in and log out. The offline WebSQL Database (javascript) should now sync and upload to Cloud Service Server, when user is logged in. But also the data should stay keep updated. If something change in cloud database, the web application shoud update the local WebSQL to changed data. I would be nice, if I can see at backend all user and manage them (edit, delete reset passwort).