Remove 'Home' text from home screen

Should be implied
Add rails image
Update home page and application layout

Let's start adding some real stuff.
We are preparing to add styling.
Update Gemfile for Bootstrap
Add stylesheet
Precompile images
Add partials for header, footer, and ie shim
Add stylesheets for footer
Clean up stylesheet

Nest classes where necessary
Replace hard coded CSS color codes with variables
Update RSpec view paths with route var names
Update hardcoded links with route var names
Clean up and refactor tests for static pages