Make ui tests recognize visibility: hidden; elements as hidden.
unnest games/levels in routes and urls for easier linking from code outside dashboard
Automatically built
fix bad merge; better test for Games#show
Merge game-level-to-level
Merge pull request #1175 from code-dot-org/ui-test-visibility

Make ui tests recognize visibility: hidden; elements as hidden.
Merge pull request #1178 from code-dot-org/finished

dashboard DTD