Only make call to db to check if email is in database if email is valid
Changed request to a POST request so that the email is not stored in the request URL which is saved in weblogs. Apparently this can make it easy for spam bots. Also I don't have to worry about funky emails ruining URLs (although Im not even sure if there is an email which would ruin a URL).
Closes
Closes #182
Description
Did a couple things: