add heartbeat rule page
remove 业务大盘 for metric module, use corresponding tag instead
Merge pull request #528 from youyong205/master

add the router page
amend HeartbeatAlert ftl
amend heartbeat metric's ftl
fix alert bug
Merge branch 'master' of https://github.com/dianping/cat
clean code
refactor HeartbeatAlert module
fix judge time bug
Merge pull request #530 from leonindy/master

refactor heartbeat alert module
Merge pull request #529 from jialinsun/master

fix alert bug
add the event name max size