Preverify email 1056338

https://bugzilla.mozilla.org/show_bug.cgi?id=1056338

API to send preverification emails to verified users on request. I moved `verified` from the user's account API to the unauthenticated one so we can skip this if we know it won't work.
I do that I can. In other news leaving off `.as_view()` makes for some fun debugging.