checks to make sure same person is not picked again in sequence

Signed-off-by: Pritika Nilaratna <pritika.16@gmail.com>
Merge branch 'master' of https://github.com/nilaratna/tater

Signed-off-by: Pritika Nilaratna <pritika.16@gmail.com>

Conflicts:
	storage/play.dat
	storage/users.dat