Xperia Z3 tripod mount

Took the Xperia holder from [Sony Xperia Z3 Mount For Playstation Dualshock 4](http://www.thingiverse.com/thing:575680) and added the screw from [Galaxy S4 Tripod Mount].(http://www.thingiverse.com/thing:137118)

So now You have a nice tripod mount for your Xperia Z3.

EDIT: Fixed remaining internal faces.