Update userguide/src/en/chapters/ch07b-BPMN-Constructs.xml

typo in user guide, Should be activiti:candidateStarterGroups not activiti:candidateStarterUsers
Merge pull request #26 from didxga/patch-1

Update userguide/src/en/chapters/ch07b-BPMN-Constructs.xml
ACT-1317: CommentEntity created when assigning to null has right type
Merge remote-tracking branch 'upstream/master'
 add test case for act-1026