Server: add bans by IP and usernames (rework admin tools)

Current version have special admin console (#5388). It can block users but it works with real users only and have many limitations like support "registration only server" or can ban only user.

It will be useful to add:
* [ ] add support of servers with disabled registration;
* [ ] add ban by IP;
* [ ] add ban by name;
* [ ] add chat mute (current version supports only online players);
* [ ] improve or rework admin tools to support new features (bans table list, see below);

So new ban mechanics must be rewrote and all ban informations must be removed from user table to special tables. I recommends to use new bans table with all bans records. That table can contains fields:
* date/time created;
* admin/moderator name;
* user ID to ban or mute
* user name to ban or mute (case insensitive and `*` mask support);
* IP to ban or mute (mask `*` support);
* restriction type (ban, chat mute, etc);
* end date;
* reason.

And all that settings can be checked on user's connection or chat send.