Drag-n-Drop upload should be made more obvious
Followup to #54 (closed)
The 'Submit resource' button on a user profile page is also a hidden drag-n-drop upload form. However, there's no indication of this being the case, and most people will probably never notice.
If this isn't intentional (@doctormo ?), then we should at least add a title attribute to the button that explains it. Or we could add an icon, maybe, if that would help make it clearer.
The text should also mention the CoC.