fig app frontend bug
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
add interface for user defined class
amend app page
filter commands before generate line chart
Merge pull request #563 from leonindy/master

amend HeartbeatAlert, which can work now