fix alt text for breadcrumbs home icon
properly name form labels for the file selection
add text to Delete action
add empty alt text for user image
fix Delete action text being translatable
add alt text to 'Cancel upload' button
add text to Settings button
use method to only visually hide elements, show only for screen reader
add label for search field for screen readers
Merge pull request #12900 from owncloud/more-accessibility

More accessibility fixes for Files