CLC-4594 - Alt Media: Build collapsible panel in the Files Feature
CLC-4621 - Alt Media: Add approved text
CLC-4594 - Using RegEx test method for boolean response
CLC-4594 - Fixed style syntax. Using 'hide' class instead of display:none style. Applied aria-alert to span
Merge pull request #3216 from redconfetti/CLC-4592-alternative-media

CLC-4592 - Alt Media: As Alternative Media Sponsor, I need to make Instructor's alternative media obligations visible and accessible in bCourses