Added StaticPages controller

Added StaticPages controller, plus stub pages for Home and Help.
Added integration tests for static pages.

Added integration tests for static pages. Modified static pages to allow
tests to pass. Also, added an About page.
Give the titles of the static pages some dynamic content

Mid-refactor; WIP.
Genericized Home, Help, About pages

Moved common, skeletized content into application.html.erb. Reduced
contents of Home, Help, About pages to only what is unique to them.
Removed chaff file