add heartbeat rule page
remove 业务大盘 for metric module, use corresponding tag instead
amend HeartbeatAlert ftl
amend heartbeat metric's ftl
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
Merge pull request #531 from youyong205/master

add the event name max size