Add profile and email verification.

core/api/auth.py

core/api/profile.py

core/models/profile.py

core/serializers/login.py

core/serializers/profile.py

core/serializers/register.py

core/signals.py

core/urls.py

ece651_backend/settings.py

templates/email/user_reset_password.html

templates/email/user_verification.html

templates/email/verification_fail.html

templates/email/verification_success.html

templates/email_index.html

templates/user_reset_password.txt