Add alignment/distribute tools to Owlet

It has been very helpful to have this feature in Boxshot (although it's a bit clunky compared to Adobe's Align tools.) I am finding myself bringing .dae's of boxes that I set up in either Boxshot or Origami into Owlet, and then arranging them in Owlet on a pre-built shelf. So I actually find I need the Align tools more in Owlet than any other boxshot software.