Initialize HTable after the HBaseAdmin be initialized
Merge remote-tracking branch 'rickie/rickie'
Modify some of the annotation
Merge remote-tracking branch 'pan/master' into rickie
Create HBbaseStagingDatabase, blank class
Add getCollection function in HBaseObjectDatabase in order to get HTable 'conflicts' in HBbaseStagingDatabase
Implement HBbaseStagingDatabase, need to be tested
Merge remote-tracking branch 'rickie/rickie' -- stagingDatabase
Add hbase conficts,logOp performance,RevTreeBuilder test