Enlarge file drop zone

[Bilge]

I suggest making the drop zone for file targets the entire size of the window. This should not have any downside as there is no reason to be dragging any other assets over any other part of the page. As is, the drop area is rather small, and becomes even smaller once a file is loaded.

[hwmrocker]

also when you scroll down to change the visible ore nodes the file drop area leaves the visible area completely (on Full HD monitor)