BZ-965454 - java.lang.NullPointerException in
org.jbpm.bpmn2.xml.di.BPMNPlaneHandler.end() when missing process id
 - fixing some task commands
improvement to randomly failing test
 - updating REST and WS handlers
 - updates to use kie-wb
 - fixing issue with jaxb serialization of groups
 -improving command impls
 - fixing incorrect import
 - more fixes for add task command
 - fixing failing AddTaskCommand tests
 - removing sysout