update admin_user template

Author: seanlinsley

lib/generators/active_admin/install/templates/admin_user.rb.erb

@@ -4,14 +4,19 @@ ActiveAdmin.register <%= @user_class %> do
 
 <% end -%>
   index do
+    selectable_column
+    id_column
     column :email
     column :current_sign_in_at
-    column :last_sign_in_at
     column :sign_in_count
-    default_actions
+    column :created_at
+    actions
   end
 
   filter :email
+  filter :current_sign_in_at
+  filter :sign_in_count
+  filter :created_at
 
   form do |f|
     f.inputs "Admin Details" do