Port file attachment views to ES6 and InlineEditorView.
Review Request #9444 - Created Dec. 15, 2017 and submitted
This change ports the last couple of file attachment related views (the
revision selector view and thumbnail view) to ES6. While I was working
on the thumbnail view, I also ported it to use the new InlineEditorView
- Ran js-tests.
- Manually tested caption editing in the file attachment thumbnails.
Revision 2 (+259 -228)
Checks run (2 succeeded)