contact form

[Vandivier]

please sign in and we will respond to the email address on file

radio box to "Reply to my primary email " or "Reply to my contact email " if profileContactEmail exists, if profileContactEmail doesn't exist then "Click here to add a contact email to your account."

also, update the privacy policy to point at the contact form rather than including the literal address

[Vandivier]

related #121

maybe this is wrong but it kinda seems to me a feedback can basically be a contact message with a score

[Vandivier]

in the future you can contact a teacher through a teacher page but there's only one teacher rn sooo