Ban table

sIP- ip or nil when ban don't have ip.
sNick- nick or nil when ban don't have nick.
sReason- reason or nil when ban don't have reason.
sBy- nick of operator who create ban or or nil when ban don't have it.
 
iExpireTime- Seconds from 1.1.1970 or nil when ban is perm ban.
 
bIpBan- true or nil.
bNickBan- true or nil.
bFullIpBan- true or nil.