v4.0.0 - Upgrading your Angular version

Steps before attempting to run this new Angular 4 -> 5 upgrade.

1. Make sure to update to the latest twig-api master (and deleting your local docker image of it) before attempting to run this. It includes a fix for crashing e2e tests. -> buildit/twig-api#14
2. Upgrade Angular CLI globally to 1.6.1 -> https://github.com/angular/angular-cli#updating-angular-cli
3. Sync your local NPM packages to the latest via npm install