disable MobileRedirect, which does not seem to work, we are now using Rack::MobileRedirect

lib/travis/web/app.rb

@@ -135,7 +135,6 @@ class Travis::Web::App
       builder.use Rack::Protection::FrameOptions
       builder.use Rack::Protection::PathTraversal
       builder.use Rack::ConditionalGet
-      builder.use MobileRedirect
       builder.run router
       builder
     end

lib/travis/web/app/mobile_redirect.rb

@@ -1,3 +1,4 @@
+# not used, doesn't seem to work
 class Travis::Web::App::MobileRedirect < Struct.new(:app)
   def call(env)
     request = Rack::Request.new env