Refactor: `test-app` should be it's own package

[kyranjamie]

Currently there are dependencies, that are only used in the test-app package, installed in the main wallet's package.json.

test-app should have its own package.json and list its own dependencies. We should remove any test-app packages from the main wallet's package.

[fbwoolf]

Good call, I have noticed this being a problem too. 👍

[markmhendrickson]

@kyranjamie is this resolved?

[kyranjamie]

No, we should still do this when we get the chance

[fbwoolf]

Changed the issue name here to reflect moving the test-app out of the wallet repo and into the new browser app.