Uses index file.
No longer uses index file.
Per 'http://excid3.com/blog/heroku-actionviewtemplateerror-css-isnt-precompiled/#.UYWRONfn2fY', added 'config.assets.compile = true' to 'config/environments/production.rb'
Updated button 'feedback' to add borders bottom and right, which got lost somehow.
Precompiled assets so push to Heroku production would work, as described in 'Heroku: ActionView::Template::Error (.css isn’t precompiled): http://excid3.com/blog/heroku-actionviewtemplateerror-css-isnt-precompiled/#.UYgQ4tfn18R'.