commit for merging - user was changed because groupBelonged became a shared ptr, and fndGroup and Isgroupinserver returns shared ptr now
Merge branch 'master' of https://github.com/tzoof/mtm_hw5_pq

Conflicts:
	hw5_PQ/Debug/priority_queue_test_new.o
	hw5_PQ/group.h
	hw5_PQ/recipe.h
	hw5_PQ/user.h
after pulling and merging with david