Refactor populating world functions into their own buildWorld handler file
Clear models of JSON commented out stuff
Routes to new buildWorld-handler.js file due to refactoring
Refactor populate random player out of player handler to new build world handler
Refactor populate world out of screen-handler to build world handler
Remove unnecessary console logs
Fix small spelling error - undoes camel case where phaser doesn't expect it
Adds cors npm module
Adds a new route - populate entire world
Allows cross origin requests
Adds a build entire world function
Makes populate screen return a promise for use in build entire world functoin