Randomize the texture for meshes with multiple

Set it up in the blueprint Model_BoxOfFood. Whenever the blueprint is
dragged to the stage it adds the box of food with a randomly assigned
texture. Check the blueprint because it might be possible to not run the
top half every time but I cant figure out a way to set it up as a
blueprint.
More models with randomizers
Merge branch 'iss175' into DesignTeam