While benchmarking it caught my attention that when using Jinja
quickstart template TG will complain that only Genshi and Mako are
supported under TG, which really only means that we need to have
either Genshi or Mako loaded too for other things besides the
application templates (which can be in Jinja with no problems).
That warning got me thinking that maybe I should also load Mako with
Jinja, I'm not really sure if not loading another template system can
hurt other functions such as TW, but I'm under the impression that the
TW integration code sets the TW templates to either Mako or Genshi
depending on what we have loaded.