Checked project code with flake8
Added postgresql to DATABASES & social_auth app
Moved SECRET to environ vars
Configured social-auth for instagram-backend usage
Added logout & active_user dropdown menu
Merge branch 'instagram_login' into homework3
Added simple page for tag recent media
Added Photo model & simple loadphotos view
Added Photos to all page
All page: added some pagination & creation_date ordering
Today page: display 10 Photos with maximum like_number
1. Today top now displays top 10 photos with date of today
2. Added links from photos to instagram
3. Rid off obsolete code
Merge branch 'instagram_api' into homework3
Merge branch 'homework3'