Allow each device to have mulitple user accounts

Allow each device to have mulitple user accounts

SQL update script must be run. It's necessary to force the device to refresh - sorry, Jan ;).
You might be able to get away with only refreshing one collection (like calendars), or even just
pretend to edit the account settings and re-save them (which usually produces a foldersync request).

Alternatively, you can manually add the username/device mapping if it's known to the users table,
and add the username to the other new username fields in the map table and state table.

to the database tables if they are known.