Add Upload Progress/Notification for file browser

[Charlie]

One of the complaints I get from a lot of people who use the program is that they cannot tell if their file is uploading. (I mean I can tell, but it's not user friendly). We often upload large flash videos or pictures to the server and this can take several seconds.

The problem is that the window never gives any notification of the upload. It should at the very least provide a message saying "Your file is being uploaded". At best, it would be more AJAXy and offer a progress bar (Although I understand the complications with that).

This problem is probably even more present for internet users who have slower connections. My current solution is to hack the file browser plugin. Before it starts the upload, I popup a window (Using a timeout) with a simple gif. I save the reference on the element, then when the URL comes back, I look for a saved window and close it.

This feature could be as basic or as advanced as you guys want, but I think it'd really make the filebrowser more informative in that regard.