add email confirmation for registration

[bvishal8510]

Solves issue #30 . @NeuralFlux please review.

[pep8speaks]

Hello @bvishal8510! Thanks for updating this PR.

• In the file users/urls.py:

Line 13:101: E501 line too long (102 > 100 characters)
Line 14:10: E128 continuation line under-indented for visual indent

Comment last updated at 2019-07-27 06:03:27 UTC

[svp19]

@bvishal8510

• Do change the subject from Activate your Phoics account to Activate your activate Crispy AI account.
• Also, I got a WARNING while running python manage.py migrate

WARNINGS:                                                                                                                                                                    
?: (2_0.W001) Your URL pattern '^activate/(?P<uidb64>[0-9A-Za-z_\-]+)/(?P<token>[0-9A-Za-z]{1,13}-[0-9A-Za-z]{1,20})/$' [name='activate'] has a route that contains '(?P<', b
egins with a '^', or ends with a '$'. This was likely an oversight when migrating to django.urls.path().

FIX
This is because path() in Django 2.0 doesn't use regular expressions. Use re_path() instead.

See more https://stackoverflow.com/questions/47661536/django-2-0-path-error-2-0-w001-has-a-route-that-contains-p-begins-wit

~ The rest works as expected :)

[bvishal8510]

@svp19 please review the changes.