change index page, remove extraneous specs
remove extraneous helpers
remove phone number index/show pages, remove corresponding specs, update routes
remove email address index/show pages, remove corresponding specs, update routes
remove set_resource methods in controllers
replace with find_resource method in ApplicationController
extract out contact module, include it in person and contact models
extract phone_numbers and email_addresses show partials
simplify index views to use lists instead of separate td elements for show/edit/destroy
refactor people and companies show pages
add to_s method to person and company models for refactoring views