Past bans and unbanned by admin

[EricSihaoLin]

Realized that this features was no longer available to check the number of times client has been banned all together. The feature was very useful in SourceBans 1.4, and hopefully it will be re-implemented in a way that can be turned on and off (Some people don't need it, and it will affect the load speed on the Bans page)

Even though the database still stores unbanned by admin, it however does not show it, so if that can be shown (maybe a toggle in the administration settings), would be wonderful.