JBPM-3644: The JPAWorkingMemoryDbLogger does not seem to work completely
with PostgreSQL
 -adding test case
Added JbpmTestCase for new tests based on kie api
Relocated activity tests from SimpleBPMNProcessTest
Relocated event tests from SimpleBPMNProcessTest
Relocated flow and gateway tests from SimpleBPMNProcessTest
Relocated data tests and removed SimpleBPMNProcessTest
ProcessFactoryTest rewrited to use kie api
Relocated signal event tests from SignalEventsTest
Relocated resource tests from BPMN2Test
LoggingTaskHandlerWrapperTest rewrited to be inherited of JbpmTestCase
Added Apache license to the test classes
Relocated persistence tests from SimplePersistenceBPMNProcessTest
TimerCycleOnBinaryPackageTest rewrited to use kie api
Minor changes in StartEventTest