[3.1] add StaticPages controller
[3.2.1] create tests and content for home and help

* edit content of static pages home and help
* write tests for static pages home and help
[3.2] add about page and test

* create static page 'about us'
* add 'about us' to StaticPage controller
* add about to routes
* write test for 'about us'
whitespace
[3.3.1-2] add titles to StaticPages and tests
[3.3.3-4] add embedded ruby to static pages