Polymorphic association for review -> author
Getting rid of direct id assignment for followships
changing review.user to review.author in dashboard view
Polymorphic association for post -> author
Polymorphic association for game -> owner
Fixed dashboard
Fixed nested screenshot form -- users can now add/remove game screenshots in the new/edit game form.
Various fixes and improvements
Writing some tests
Hosting the seed data games' cover images on imgur instead of using random urls from google images
Working on making the tests pass without any warnings