make metadata hbase table in memory
better error message
bug fix in sum of integers
Merge branch 'staging' of https://github.com/KylinOLAP/Kylin into staging
Merge pull request #77 from janzhongi/project2home

set default project to selected project on top select when edit cube
Merge pull request #79 from janzhongi/project2home

add refresh rowkey & aggregation groups when save cube
Merge pull request #80 from janzhongi/project2home

fix cubes show detail bug
remove cache when load hive table