Fixes #1342

[ktiedt]

This cleans up our webpack stuff a bit and streamlines it as well as properly making Phaser importable (which was needed for the properly inheriting from it later)

[DreadKnight]

@ktiedt For some reason it doesn't run on Heroku, there's a log linked right into that "deployed" word above; I'm not sure if it's because it's running on a deprecated Heroku stack, since it did the job for the other stuff... https://dashboard.heroku.com/apps/ancientbeast-pr-1343/activity/builds/e9bcd5a3-64b0-4839-afa2-06e89e94fc1a

[ktiedt]

weird, it installs and builds fine... but crashes in some other way... this should be fun... :(

[DreadKnight]

@ktiedt I recall last time this happened, was an issue with Heroku itself and they eventually fixed it.
Will have to see somehow it the build works fine in their newer stack thingy perhaps...

[ktiedt]

Yeah I am trying to bump it to the new stack now to test that idea.

[ktiedt]

This works, removed test change for app.json and it should be safe to upgrade the stack from the dashboard to heroku-16

[DreadKnight]

Noticed, had to delete the deploy for this and create a new one. Will merge in the PR and deploy master branch again to ancientbeast-beta, I guess that should trigger the upgrade to the new stack. Good job!