* Added privilege level start/end columns
Added 2 new columns to the users table to indicate when a users
privilege level date / time was recognised and when the privilege level
should end.
* Updated database header
Always forget about the database header file...
* Added priv level maintenance script
Added a bash maintenance script that can be run on a scheduled basis
that will demote privileged users that have the end times on the
accounts that are prior to the date/time the script is executed.
* Added donations table
Added donations table to db for tracking user donations
Update the replay maintenance script to allow for rolling replay maintenance along with cleanup of the two associated db tables (replay access and games). This updated script will now allow players to see the past X days (8 by default) of replays rather than loosing all replays from the point in the the script gets run.
