isAbsoluteUrl = function (url) {
		return /^https?:\/\/[\w\?\-\/+=.&%]+$/i.test(url);
	}
Tries to be smart depending on what the user pastes if it looks like an url
it will make a link out of the current selection. If it's an image url that looks
like an image it will check if it's an image and insert it as an image.

@class tinymce.pasteplugin.SmartPaste
@private