Add "Copy PNG" button to Capture panel

[runer112]

This button would have the same functionality as the "Copy screen to clipboard" menu item. It would sit in the same "Screenshot" group with the existing "PNG" button, which I'd suggest be renamed "Save PNG" to match.

[mateoconlechuga]

Okay I'll add it this when I add drag and drop copy abilities

[adriweb]

That's fine, I can take care of it quickly.