Add config option to allow symbolic links for files.

src/main/resources/config.yml

@@ -16,6 +16,7 @@
 #
 
 limits:
+    allow-extra-data-values: false
     max-blocks-changed:
         default: -1
         maximum: -1
@@ -56,10 +57,13 @@ scripting:
 saving:
     dir: schematics
 
+files:
+    allow-symbolic-links: false
+
 history:
     size: 15
     expiration: 10
-
+
 wand-item: 271
 shell-save-type:
 no-double-slash: false