Add info on image upload format support and provide better error messages when image uploads fail.
Ex. a user tried to upload an SVG, which isn't supported so it failed but there was no indication that we don't support SVG or why the upload was failing.
Justin Dorfman
Merged in a post:
Error message for when an image is not suppported
Jorge Soto
Im assuming this is because i tried to use an SVG via a link on their website:
