RAR Upload Cancelled if Save clicked too early

[slominskir]

Exhibit A:

The RAR Upload input pops a File Chooser when the "Choose File" button is clicked (1). When the File Chooser is submitted by selecting a file and clicking "Open", the upload begins. There is no progress spinner gif or similar. Once the upload completes, the link "RAR Document" is displayed (2). Finally, the user can click "Save" (3) to save the upload and any other form changes.

We could consider disabling the "Save" button during the upload to prevent the user from accidentally cancelling the upload by clicking "Save" too early. It would also be useful to show a progress spinner gif or similar.

Note: The accidental cancel scenario appears to be rare. Larger files might take longer so may be more likely to trigger this. Often though upload is near instanteous.

Aside: Would also be nice if it was possible to remove an attachment. Can't do that now (but you can replace/overwrite).