Implemented the ability to toggle pvp (#97)

* Implemented the ability to toggle pvp

* Changed listener to  PrePlayerAttackEntityEvent

* ... Updated the formatting so I don't get screamed at !

* _

server/src/main/resources/messages.yml

@@ -119,6 +119,7 @@ playerFrozen: "<red>That player is already frozen!"
 playerMuted: "<red>That player is already muted!"
 playerLockedUp: "<red>That player is already locked up!"
 muted: "<red>You are currently muted - STFU!"
+pvpDisabled: "<red>PVP has been disabled!"
 chatIsOff: "<red>Chat is currently toggled off!"
 # 0 - The command sender
 # 1 - The set value of the chat toggle

server/src/main/resources/toggles.yml

@@ -14,3 +14,6 @@ redstone: true
 
 # Is chat enabled?
 chat: true
+
+# Is PVP enabled?
+pvp: true