implemented handling opening an already open experiment #375
implemented handling opening an already open experiment #375

USGSDenverPychron/pychron,USGSDenverPychron/pychron,UManPychron/pychron,USGSDenverPychron/pychron,USGSDenverPychron/pychron,NMGRL/pychron,UManPychron/pychron,NMGRL/pychron,NMGRL/pychron,NMGRL/pychron,UManPychron/pychron,UManPychron/pychron