use the correct package
Merge branch 'master' of github.com:dianping/cat
Merge pull request #269 from youyong205/biz

Biz
complete homework, just test, ignore it.
clean code
commit import but not complete modify
metricAggregationConfig model is ok for config
Merge branch 'master' of github.com:dianping/cat
add files to save before pull
save file
add files
conficts
conficts
resolve conflicts
save critical files
fuck conflicts
delete test files
add aggregationGraphCreator
modify the cat issue, top analyzer, remove unused monitor
delete files