Replace all async reads and writes to the JSON database with the sync
reads and writes to prevent a data corruption race condition where two
requests are processed at the same time and write to the same file, or
one reads while the other writes causing read of partially written data.
Add page to allow admins to inspect all of the details stored on the
server of a user account. For now this is just the UserDetails, but
in the future this is planned to be expanded to also show sessions
and logs.
