Rb/379 admin interface digitizations

Admins can view Artifact transition logs
Admins can view Artifacts that have been requested
Admins can confirm users as sponsors for artifacts
Admins can change state of artifact in admin interface
Tests. 
I changed this to be `config.after(:context)` in a recent commit. Did you change it back to `config.after(:each)` deliberately, or is this an issue with not having the latest commits from `development` branch?