Implemented CraftServer.getAllowEnd(). Thanks codename-B!

src/main/java/net/minecraft/server/MinecraftServer.java

@@ -223,7 +223,13 @@ public class MinecraftServer implements Runnable, ICommandListener, IMinecraftSe
             }
 
             if (k == 2) {
-                dimension = 1;
+                // CraftBukkit start (+ don't do this in server.properties, do it in bukkit.yml)
+                if (this.server.getAllowEnd()) {
+                    dimension = 1;
+                } else {
+                    continue;
+                }
+                // CraftBukkit end
             }
 
             String worldType = Environment.getEnvironment(dimension).toString().toLowerCase();

src/main/java/org/bukkit/craftbukkit/CraftServer.java

@@ -309,6 +309,10 @@ public final class CraftServer implements Server {
         return this.getConfigString("server-id", "unnamed");
     }
 
+    public boolean getAllowEnd() {
+        return this.configuration.getBoolean("settings.allow-end");
+    }
+
     public boolean getAllowNether() {
         return this.getConfigBoolean("allow-nether", true);
     }

src/main/resources/configurations/bukkit.yml

@@ -14,6 +14,7 @@
 
 
 settings:
+    allow-end: true
     spawn-radius: 16
     permissions-file: permissions.yml
     update-folder: update