add user_agent to channels

test/fixtures/admin_users.yml

@@ -1,3 +1,22 @@
+# == Schema Information
+#
+# Table name: admin_users
+#
+#  id                     :integer          not null, primary key
+#  email                  :string(255)      default(""), not null
+#  encrypted_password     :string(255)      default(""), not null
+#  reset_password_token   :string(255)
+#  reset_password_sent_at :datetime
+#  remember_created_at    :datetime
+#  sign_in_count          :integer          default(0), not null
+#  current_sign_in_at     :datetime
+#  last_sign_in_at        :datetime
+#  current_sign_in_ip     :string(255)
+#  last_sign_in_ip        :string(255)
+#  created_at             :datetime
+#  updated_at             :datetime
+#
+
 # Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
 
 # This model initially had no columns defined.  If you add columns to the