some minor clean up
recover file accidentally removed
add db update file for project_properties
Merge branch 'release-3.0' of github.com:azkaban/azkaban2 into release-3.0
fixing the deadlock in triggermanager
clean up sql update scripts
Merge branch 'release-3.0' of github.com:azkaban/azkaban2

Conflicts:
	src/java/azkaban/scheduler/ScheduleManager.java