BPMN Designer: fix for none current selection in paintarea
BPMN Designer: fix for none current selection in paintarea

hitsumabushi/processmaker,baozhoutao/processmaker,baozhoutao/processmaker,colosa/processmaker,baozhoutao/processmaker,colosa/processmaker,tomolimo/processmaker-server,tomolimo/processmaker-server,baozhoutao/processmaker,colosa/processmaker,tomolimo/processmaker-server,hitsumabushi/processmaker,tomolimo/processmaker-server,tomolimo/processmaker-server,hitsumabushi/processmaker,colosa/processmaker,baozhoutao/processmaker,baozhoutao/processmaker,colosa/processmaker,hitsumabushi/processmaker,hitsumabushi/processmaker,colosa/processmaker,hitsumabushi/processmaker,tomolimo/processmaker-server