Chapter 3 section 3.2.1.1.

* [spa:application] create files.
Chapter 3 section 3.2.1.2.

* [spa:application] add javascript dependencies.
Chapter 3 section 3.2.1.2.

* [spa:jshint] modify style.
Chapter 3 section 3.2.1.2.

* [spa:index page] load external javascript and css.
Chapter 3 section 3.2.1.2.

* [spa:application style] add root namespace css.