Disable OpenID by default

We talked about that during a community call. It turned out that not
everyone likes to have OpenID on their instance.

This patch disables OpenID by default.

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

lib/config/default.js

@@ -151,5 +151,5 @@ module.exports = {
   allowEmailRegister: true,
   allowGravatar: true,
   allowPDFExport: true,
-  openID: true
+  openID: false
 }