remove invalid js code
Merge pull request #511 from youyong205/master

refactor
config set interface modify
Merge branch 'master' of https://github.com/dianping/cat
add HeartbeatAlert module
Merge branch 'master' of https://github.com/dianping/cat
Merge pull request #513 from leonindy/master

add HeartbeatAlert
Merge pull request #512 from jialinsun/master

config set interface modify
modify the code