RE: nswfjs.com - Looks like video might have broke and no tests caught it.

Code: https://github.com/infinitered/nsfwjs/tree/master/example/nsfw_demo
Fix, and fix tests.

It's high time we introduced a test suite alongside the development process to help catch regressions. As we move towards a more class-based ecosystem with less reliance on global variables, this should become achievable with something like PHPUnit.

This will be an ongoing issue, so no milestone required. It can be closed when a framework is in place and the tests start being added. At minimum we

Currently the module field on package.json points to src/simpla.js but really it should point to a separate build, that's been transpiled, but not bundled. This means that whatever module bundling system consumers are using will still be used, but it won't need to be transpiled. As it currently stands, users can come up against [this bug](https://github.com/facebookincubator/create-react-app

Description

Steps to Reproduce

Configure content dimensions like described in https://docs.neos.io/cms/manual/content-repository/content-dimensions

Actual behavior

• Needs some more space between the dimension labels in the top bar
• Cancel / apply seem to miss