Paste images from clipboard

[belonesox]

Please, add posibility of insert images from clipboard.
(Now it is possible without flash/Java, http://stackoverflow.com/questions/490908/paste-an-image-from-clipboard-using-javascript etc).

This will be very useful for fast collaborative UI prototyping, with pasting cropped screenshots from clipboard and adding some pen/merkers sketches.

[JohnMcLear]

I'm not going to be actively working on this project. There is a way you can upload, for now that is the best we can do. Sorry but I just don't have the time.

[JohnMcLear]

Dupe of #158