Change name to Rebuilding

As per emails this pull request changes the name of the project to Rebuilding. It also attempts to hide parts of the site that we do not need yet by commenting out the code. This refers to files in /app/views with the exception of:
/app/views/layouts/application.html.erb
/app/views/partials/_home-explained.html.erb
/app/views/partials/_tutorial.html.erb
/app/views/fixer/address.html.erb
/app/views/fixer/color.html.erb