* DEV: Don't lint core files when target == plugins
* Prettier the plugin/*.js files
* Update eslintignore/prettierignore
* Add eslint-plugin-ember and eslint-plugin-node
* Properly lint all js files in all plugins
* LINT: run prettier on test/*.js files
* DEV: Run prettier checks on test/*.js files
* ESLint plugins' assets/javascripts and test/javascripts directories only
* Remove some `.es6` from comments where it does not matter
* Use a post processor for transpilation
This will allow us to eventually use the directory structure to
transpile rather than the extension.
* FIX: Some errors and clean up in confirm-new-email
It would throw an error if the webauthn element wasn't present.
Also I changed things so that no-module is not explicitly
referenced.
* Remove `no-module`
Instead we allow a magic comment: `// discourse-skip-module` to prevent
the asset pipeline from creating a module.
* DEV: Enable babel transpilation based on directory
If it's in `app/assets/javascripts/dicourse` it will be transpiled
even without the `.es6` extension.
* REFACTOR: Remove Tilt/ES6ModuleTranspiler
