* chore(test): add protractor4
* fix lint, remove boilerplate files, fix less gen
* separate scripts between package.json
* ignore a2docs.css in boilerplate
* remove tslint in _examples
- App now shows how Angular handles untrusted URLs and resources
- E2e test covered new functionality
- Copyedits to prose
- Updated provider expressions to use latest syntax
The original security feature tracker:
https://github.com/angular/angular/issues/8511