mirror image function required

[Alan Bell]

it would be great to have an option to flip the image left-right so that you can copy the signer as if you were looking in a mirror rather than looking at someone facing you.

[Alan Bell (alanbell)]

this is the code that flips the image (static images only, no idea how to do the videos)
it goes in the showSign function around line 75 and needs a button or config setting or something to turn it on and off

            image = QtGui.QImage()
            image.load(sign.filename)
            pix = QtGui.QPixmap.fromImage(image.mirrored(True, False))
            self.ui.img_lessonLabel.setPixmap(pix)