Switch Faraday adapter to typhoeus

It uses curl which has less problems connecting
to a missconfigured IPv6 host (falls back to v4)

config/initializers/faraday.rb

@@ -1,6 +1,13 @@
 #   Copyright (c) 2010-2011, Diaspora Inc.  This file is
 #   licensed under the Affero General Public License version 3 or later.  See
 #   the COPYRIGHT file.
+
+# Use net_http in test, that's better supported by webmock
+unless Rails.env.test?
+  require 'typhoeus/adapters/faraday'
+  Faraday.default_adapter = :typhoeus
+end
+
 options = {
   request: {
     timeout: 25