Email permit application to user, city

This PR allows users to automatically send an email to DSD with their completed permit application. We're using our own team email now for testing, but we can generalize later and use the DSD email.

Creates a new view at the end telling the user what is coming next.

@amymok , this is almost ready, I need your help on a few things

* need to merge master in
* need to move over translations, add in new translations where needed in yaml
* i don't think this yaml process will work for the mailer..... it'll have to be english for now, we can reevaluate later