This method will restore the contents from the storage engine back to the editor.

@method restoreDraft
function() {
			var self = this, storage = self.storage, content;

			if (storage) {
				content = storage.getItem(self.key);

				if (content) {
					self.editor.setContent(content);
					self.onRestoreDraft.dispatch(self, {
						content : content
					});
				}
			}
		}