ACT-989 Making sure that exclusive jobs created while executing an exclusive job are executed by the same thread sequentially

ACT-1045 add RejectedJobsHandler to be able to configure what happens with acquired jobs which cannot be executed right now.

Added test case for ACT-1072 (Execution gets stuck after nested Sub-Process with no outgoing Sequence Flows), but put it into a comment in order not to break the build

ACT-1062: Patch from Nico to avoid problems on oracle if multiple activiti engine schemas are visible to the database user

ACT-1021 Refactoring: Moved error propagation code from ErrorEndEventActivityBehavior to separate class ErrorPropagation

ACT-1021 Added support for catching BPMN Errors thrown in sequential and parallel Multi-Instance Service Tasks

upgrading mybatis to 3.0.6 for ACT-861. mybatis is now more strict in namespace and resource checking, therefore added full namespace to byteArray select reference in the HistoryDetail mapping to fix the test suite.

ACT-1052 Activiti-cdi: Upgrade Jboss Weld to resolve Issue with BeforeShutdown event in ActivitiExtension