get rid of test cruft
If an email client supports HTML, then it should render a medium sized image inline in the email.

* add the faker gem in dev/test
* don't leave FDs laying around from IO
* email is full HTML document
* have text version of email as well
* silence I18n deprecation warnings
* grab original _and_ medium urls from SmugMug
* add test to email rendering and delivery
fix merge conflicts