use config module
add sessions
add session dependencies
add passwordless dependencies
add passwordless config
first pass as passwordless support
add flash-message support
add login page
re-arrange app.use statements
add more email config
refactor sendgridDelivery into its own file
add login routes
add migrations folder
add login model
remove console.log
add requestToken middleware
add logout route
redirect user back to origin page after logging in
rename /sendtoken to /login (POST)
clean up POST /login route