Converted all views to class-based views
All views now work as expected.  Need to create tests surrounding them.
Added slug_field variable to detail views
Revert "Added slug_field variable to detail views"

This reverts commit e6b415c46746e9751e9e6df452c026366472bbb1.
Revert "Revert "Added slug_field variable to detail views""

This reverts commit c29e7d47a5b2d0f2cffaa0366cfc971de658a8d3.
Renamed contributor_slug to slug for Author model
Added new command populate_dev_db to create model instances in db