also add email to typus admin

Author: phoet

config/typus/user.yml

@@ -1,6 +1,6 @@
 User:
   fields:
-    default: nickname, name, twitter, github, admin
-    form: name, twitter, github, url, location, description, freelancer, available, hide_jobs, admin
+    default: nickname, name, twitter, github, email, admin
+    form: name, twitter, github, email, url, location, description, freelancer, available, hide_jobs, admin
   order_by: -created_at
   application: CRUD