Customising Auth User model.
Done django rest for sh_user model.
Django rest register and login.
Session and token authentication.
Integrating login/register API.
Added login error page.
Modified provider model.
Done update provider profile api.
refs SustainHawaii/djangoshop#1, #25, split html to multiple part.
Changed api urls.
refs SustainHawaii/djangoshop#1, #25, split html to multiple part - directory.
refs SustainHawaii/djangoshop#1, #25, split html to multiple part - landing pages.
refs SustainHawaii/djangoshop#1, #25, fixed csrf token is missing.
Created shop app.
Changed ulrs.
Merge branch 'providers_profile' of https://github.com/SustainHawaii/djangoshop into providers_profile

Merging
refs SustainHawaii/djangoshop#1, #25, split html to multiple part - dashboard.
Modified login api. Shop settings migrations.
Merge branch 'providers_profile' of https://github.com/SustainHawaii/djangoshop into providers_profile
Done get-shop-settings api.