Move email templates into content server and create a route to serve them - fixes #475
restrict access to templates
Merge pull request #483 from mozilla/move_email_templates

Move email templates into content server and create a route to serve them

When rebased and merged with #517, all tests pass everywhere, all the time. Code looks good to me, reads well, all my requests have either been made or answered appropriately.

Nice work @zaach!

r+