[NTG-context] \placefigure and title bug in latest beta

Hans-- In today's beta, the following produces a figure entitled "Figure 1 title": \setupexternalfigures[location={local,default}] \starttext \useexternalfigure[cow.pdf] \startplacefigure[title={A cow}] {\externalfigure[Graphic][cow.pdf]} \stopplacefigure \stoptext Alan