Moved users into new admin-namespace and made the controller restful. Also moved some logic from the controller into the user-model (dry it up..).

test/functional/admin/users_controller_test.rb

@@ -0,0 +1,8 @@
+require 'test_helper'
+
+class Admin::UsersControllerTest < ActionController::TestCase
+  # Replace this with your real tests.
+  test "the truth" do
+    assert true
+  end
+end