Fix bugs with focusing tiled attachments
Gallery mode for content item with multiple attachments
GalleryAttachmentListView. Refactor AttachmentListView. Add ModalView.
Compile less
Modal displays content in the center of modal.
Scale to fit the content attachment when resizing modal
Update gallery attachment view to have author metadata
Update tests.
Use updated gallery assets. Fix issue with webkit displaying focused attachment unscaled.
Check whether focused attachment element exists before resizing
Fix bug with passing in focused oembed view to gallery attachment view. Fix bug with replacing the content metadata in gallery attachment view. Add logic for prev/next buttons. Fix bug with page index of tileable attachment.
Add next/prev logic
Add left/right arrow keyup handlers
Add attachment header pass through event handler so thumbnails under the header gradient are clickable
Hide the tiled content-attachments-frame in pass through handler
Prevent scrolling when modal is active/visible
Add more tests for modal view
Fix scroll issue with modal view test
Add tests for event handlers in list view.
Refactor attachment list view, gallery attachment list view, tiled attachment list view, and modal view instantiation