JBPM-3915: Task query fails if user not part of any groups
removed bitronix specific code as it causes issues on AS7
JBPM-3882 - Clean Tasks from DBMS when a Process is cancelled
removed sessionId from getProcessInstanceById method
- updating cdi work item handlers to manage multiple sessions
- updating process desc query
- removing duplicated handler
JBPM-3917: Please provide mechanism to track time a task is claimed
JBPM-3917: Please provide mechanism to track time a task is claimed
 - fixing error in commit
JBPM-3912: Add query to return Tasks Id by Process Instance Id
JBPM-3912: Add query to return Tasks Id by Process Instance Id
 - adding missing commit
added test cases for filter methods for process def and instances
 - updates to session mgmt
Extending production db testing to executor-services module.
Started work on TaskQueryService tests.
- adding group and owned tasks and by expiration date
 - fixing assemblies
BZ893196 - Please provide way to set 'createdBy' with arbitrary values at process creation time (PRODMGT-307)
Set release version: 6.0.0.Alpha7 (0.1.1.Final for UberFire)
Set release version: 6.0.0-SNAPSHOT (0.2.0-SNAPSHOT for UberFire)