bug(engine): Nested multi-instance activities did not work

#ACT-1426: Nested multi-instance activities did not work

related to CAM-592
bug(engine-cdi): ProgrammaticBeanLookup doesn't regard alternatives

ACT-1555: ProgrammaticBeanLookup doesn't regard alternatives

related to CAM-592
feature(engine): Native query support paging

ACT-1588 Native query support paging

related to CAM-592
Merge branch 'origin/master'