* Users are all fetched from the DB
* Each user is assigned special stats
* Hashrate
* Shares
* Balance
* Est. Payout
* Est. Donation
* Display in sortable and paginated table
This is not well optimized. Each user stats are grabbed individually
via the stats and transaction classes. It would probably make sense to
expand the statistics class to list a full user list with all statistics
available instead to cover this in a single SQL query.
* Added isAdmin to user class
* Run isAdmin on EACH page to ensure admin status hasn't changed
* Added main page with no content
* Added user query page with basic form, no content