In artidoc, when an image is dropped into a section, it is uploaded.
Since we cannot save the section while the file is being uploaded, we have to disable the save button.
However, I should be able to save the section as soon as all the pending uploads are finished (100%).
Currently, the notification component waits 3 seconds before deleting the ongoing file upload, preventing the user to save the section.
Let's enable back the save button when all the pending upload of a given section have a progress of 100%.