PowerRegenEvent and optimization

- Add power regeneration event
- Change getNone(), a deprecated method, to getWilderness()
- Optimization

src/main/java/com/massivecraft/factions/integration/Worldguard.java

@@ -54,7 +54,8 @@ public class Worldguard {
     // Returns:
     //   True: PVP is allowed
     //   False: PVP is disallowed
-    public static boolean isPVP(Player player) {
+    @SuppressWarnings("deprecation")
+	public static boolean isPVP(Player player) {
         if (!enabled) {
             // No WG hooks so we'll always bypass this check.
             return true;