Suggestion: Busy animation

[animaux]

Some customers are confused as to what is happening when they submit an entry, especially with a download that might take some time, and there is a period of no feedback.

My suggestion is to replace the the submit button with an animation as soon as it’s clicked. Upon reload it will be replaced with a new one then anyway. This will make it clear there is something happening. Could as well be applied to the whole overlay.