Add a static pages controller

Add StaticPagesController with home and help actions.
Add home page test and update content
Add help page test and update content
Add about page test and about page
Enhance home page tests and update contents
Enhance help page tests and update contents
Enhance about page tests and update contents
Set static page titles using ERB
Update application layout with common title

Update application layout to use shared title format.  Update static
page contents to work with application layout.