Users shouldn't be able to book for today
Fix issue with lesson options not resetting

When the service is changed, everything needs to be reset. Fixes #58
Show the program listing when logged out

Fixes #57
Fix wrong button size on modal

Fixes #56
Email the instructor when a lesson is booked

Closes #54
Fix wrong email sent when booking program
Increase permissions for add/delete of users

Closes #50
Fix primary button on password remind page

Fixes #48
Better message with duplicate email address

Closes #49