unification of persistence and transaction handling for jbpm and human task
removed dep.txt file that was committed by mistake

(cherry picked from commit ae35d05892a33c68f4610e0024035ed7b2ec541f)
fix for usergroupcallback and userinfo in hosted mode and tomcat

(cherry picked from commit fa0ccfaf5fb827e552af99e4c81086706eea22b0)
disabled jbpm human task jpa module to avoid new module being added in late stage of the 6.0, will be anabled post 6.0