ProgressDialog: added more info
ProgressDialog: added more info

chen0510566/rtabmap,srmanikandasriram/rtabmap,chen0510566/rtabmap,chen0510566/rtabmap,srmanikandasriram/rtabmap,markusgrotz/rtabmap,markusgrotz/rtabmap,srmanikandasriram/rtabmap,markusgrotz/rtabmap