Adds per faction warps functionality from #72.

Default max warps per faction is 5. It can be changed in the config.yml.
You can now use {warps} in the info board to show how many warps a faction has when you walk into their territory.
Only faction mods+ can set faction warps.

src/main/java/com/massivecraft/factions/FLocation.java

@@ -2,6 +2,7 @@ package com.massivecraft.factions;
 
 import com.massivecraft.factions.util.MiscUtil;
 import org.bukkit.Bukkit;
+import org.bukkit.Chunk;
 import org.bukkit.Location;
 import org.bukkit.World;
 import org.bukkit.block.Block;
@@ -149,6 +150,14 @@ public class FLocation implements Serializable {
         return dx * dx + dz * dz;
     }
 
+    public boolean isInChunk(Location loc) {
+        if (loc == null) {
+            return false;
+        }
+        Chunk chunk = loc.getChunk();
+        return loc.getWorld().getName().equalsIgnoreCase(getWorldName()) && chunk.getX() == x && chunk.getZ() == z;
+    }
+
     //----------------------------------------------//
     // Some Geometry
     //----------------------------------------------//