BUG 0000 Fixing a litle bug when opening a case
BUG 0000 Fixing a litle bug when opening a case

- problem found when a case was open and a node need to set into cases steps tree
- validation missing added

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