Removed Multiplayer Variable

• Multiplayer Variable was set up with the intention of splitting runs into either a run with other people in the server, or a run on a personal server with only you in it

Fixed rules for Kill category

• Kill was missing rules like "must play on Chernarus" and "must be on a vanilla server"
• When removing Multiplayer variable, Multiplayer rules got changed to General Rules under the Game Rules category
• New "Map Rules" section under Category Rules on the Kill Category

Option to add Livonia

• With the new leaderboard, Livonia can be added as a Main Category since its an official map on official servers and it could also be added under the kill category