fixed BaseArArFigure.analysis_group so that it uses sorted_analyses instead of analyses- fixes issue observed when calculating plateau age and analyses unsorted in unknowns pane. you cannot change the order of analyses when plotting a spectrum, always sorted by timestamp
fixed BaseArArFigure.analysis_group so that it uses sorted_analyses instead of analyses- fixes issue observed when calculating plateau age and analyses unsorted in unknowns pane. you cannot change the order of analyses when plotting a spectrum, always sorted by timestamp

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