optimizing code in late loading players check

using MarkClinetAs* with default parameters instead of separate actions
renamed variables for admin name

g_sGagAdmin -> g_sGagAdminName
g_sMuteAdmin -> g_sMuteAdminName
added verification of ConsoleImmunity variable
fixing possible bugs with not fully connected admin
Fixed bug with removing session punishments by admins with lowest rights.
+ using more default function arguments in code