move test game config file, change GameAlphaStart.js config file loaded

#### What's this PR do?
In Ariel's commits, I removed the test game (the game config file running all of the game tests necessary for the build) from **competitive-stories.json** into **test-competitive-stories.json**. In this PR, I've modified the test file to require this new test-competitive-stories json file. 

While this will fail the present build, once I merge in Ariel's PR everything should work 

#### How should this be manually tested?
Running npm test.