Fix typos for allowAnonymousEdits

Looks like we lost some variables during the refactoring of the configs
to camel case.

This should fix it.

Signed-off-by: Sheogorath <sheogorath@shivering-isles.com>

lib/config/index.js

@@ -53,7 +53,7 @@ if (config.ldap.tlsca) {
 
 // Permission
 config.permission = Permission
-if (!config.allowAnonymous && !config.allowAnonymousedits) {
+if (!config.allowAnonymous && !config.allowAnonymousEdits) {
   delete config.permission.freely
 }
 if (!(config.defaultPermission in config.permission)) {