add properties sub-menu to right-click context menu
add properties sub-menu to right-click context menu

mithrandir123/director,patmarion/director,rdeits/director,RussTedrake/director,mitdrc/director,gizatt/director,mithrandir123/director,RobotLocomotion/director,mitdrc/director,mithrandir123/director,patmarion/director,mitdrc/director,RussTedrake/director,RobotLocomotion/director,openhumanoids/director,empireryan/director,edowson/director,edowson/director,RobotLocomotion/director,empireryan/director,mitdrc/director,rdeits/director,empireryan/director,manuelli/director,gizatt/director,openhumanoids/director,openhumanoids/director,mitdrc/director,edowson/director,patmarion/director,patmarion/director,gizatt/director,RussTedrake/director,RussTedrake/director,openhumanoids/director,gizatt/director,edowson/director,edowson/director,manuelli/director,rdeits/director,mithrandir123/director,manuelli/director,empireryan/director,patmarion/director,RobotLocomotion/director,manuelli/director,rdeits/director,gizatt/director,RussTedrake/director,empireryan/director,manuelli/director,openhumanoids/director,RobotLocomotion/director,rdeits/director,mithrandir123/director