- No need to create a new storage mechanism, just use `persistent`.
- Store SCRAM keys per JID
- Upon succesfull login, store the current session JID, so that we know who to fetch SCRAM keys for
- Only store SCRAM keys when the device is trusted
Fixes#3001
Render the form based on `api.settings` instead of its own model.
When the login form is submitted, save the JID, password and connection
URL to `api.settings`.
Set the `service` on the Strophe connection object just before
connecting for the first time, otherwise a user supplied URL (via the
login form) is never used.
New API setting: show_connection_url_input
JC Brand