Added transactional support. Fixed filtering on secondary sorted columns
Merge branch 'master' of github.com:sensei-ba/sensei
Merge branch 'master' of github.com:sensei-ba/sensei

Conflicts:
	sensei-ba/ba-core/src/main/java/com/senseidb/ba/management/SegmentTracker.java
	sensei-ba/ba-core/src/test/java/com/senseidb/ba/BASentinelTest.java