change navigation from 'Today' to 'Schedule Today'
TODO comments about extracting relationships into Instructor and Student models
clarify why extraction of associations desired
Instructor and Student methods referring to cancelled and rescheduled appointments
update to label methods in appointment and avalability models for rails admin
forgot the s for dead appointments plural
spatial consistency across all models for rails_admin blocks no functional changes
availability#end_time rails_admin list view was never formatted
add overlap gem to Availability as well