Use h2 tags for subheadings on profile edit page
Wrap working days in a descriptive legend

- a visually hidden legend should help users
understand the intention of the working days 
checkboxes on the edit profile page
File upload button has a visually hidden label
Improve alt text for a profile image

- should read "Current photo of PERSON"
Add role='alert' to all flash messages
Improve warning text on delete profile dialog box
Improve accessibility of working days on profile

- hide the day letter (e.g. 'M') from screen readers

- add visually hidden text (e.g. 'Works Monday')