Added options to toggle cosmetic effects in adminmenu
Added greater steps to change upgrade options in
Added chatmessage when a bot reaches the maxlevel
Add smrpg_allow_present_upgrade_usage convar

Allow players to use the upgrades they already have levels for, if they
normally wouldn't have access to the upgrade due to the adminflags.
This allows admins to give upgrades to players they aren't able to buy
themselves.