[eyeonus]

I noticed some problems with the plugin, notably that the cvars nb_stop, sb_all_bot_team, and god do not reset when the cheat flag is removed (,that is, they stay enabled even though they are set to 0), so I fixed the plugin to cause them to reset.

While I was at it, I also added the kill command to the list, made noclip act like it does when sv_cheats is enabled, restricted the z_spawn command to exclude witches and tanks, and restricted the give command to only be enabled for "give health"- all other give options (such as "give pistol", "give gascan", etc.) will no longer work.