app success ration min change dynamically
Merge branch 'master' of https://github.com/dianping/cat
Merge pull request #561 from leonindy/master

fix app frontend bug
clean code
Merge branch 'master' of https://github.com/dianping/cat
Merge pull request #562 from jialinsun/master

app success ration min change dynamically
Merge branch 'master' of https://github.com/dianping/cat
fix heartbeat alert bug which regard some metrics' total value as current value
fix calling dataChecker bug in heartbeat alert
fix a bug in HeartBeatAlert
fix bugs about HeartbeatAlert