Reintroduce the Teaser and Author fields to posts

The have been abandoned for quite a while. We are bringing them back.

Signed-off-by: Nathan Lowrie <nate@finelineautomation.com>
Must mount routes at the end so we don't stomp other routes.

Signed-off-by: Nathan Lowrie <nate@finelineautomation.com>
Fixed some old bugs.

Signed-off-by: Nathan Lowrie <nate@finelineautomation.com>
Add paypal express routes to exceptions list.

Signed-off-by: Nathan Lowrie <nate@finelineautomation.com>