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).
It has to be known ahead of time, as the value is used by `grunt watch` task to notify the server about changes.