Feature/scaffold ngapp using `yo angular`

Rebuild the Angular SPA using `yo angular`.

**TODO**

 - [x] integration of `ngapp` into the server (webapp)
 - [x] `grunt serve` should start the full-stack app, not grunt-connect
 - [x] add css to `ngapp` - copy, move or share
 - [x] remove the html5 folder

/to @ritch please review. You can look at the work I made so far or wait until the PR is done (hopefully tomorrow).
`require.resolve` throws when the file does not exists. `path.resolve` does not, thus the error is reported much later at runtime.