Users see sign-in/out links in layout
Users see their surveys upon login
Users can select survey from index and view it
Migrate database from Sqlite to Postgres
Users can create new surveys
Survey lists & displays are separated from nav bar
Users can add text questions to surveys
Users can delete surveys
Users can edit surveys & questions

Extract surveys and questions to partials
Users can choose to take a survey & see questions
Users can submit answers to text questions
Users can review survey results
Users can easily see survey list
add pry gem