add simple_form and username field/column
add users controller, format forms for simple_form
add cancan/setup basic user authorization based on role
add user role management with rolify
removed file
add user roles, authorization, and role management
add profile photo option
add weight scaffold and user associations
add highcharts and display weight inputs
update readme
add form modal, format chart, update readme
add user authorization for weight chart
update readme (fix known bug)
update readme (fix known bug)
plot last record for day, update readme (fix record plotting)
add styling throughout, user helper, and chart conditionals
replace add, edit, & delete views with modals
update readme
add pagination to weight log
update readme