fix a js bug
fix popover bugs
improve alert documentations
refactor alert module
remove unused method
Merge branch 'master' of github.com:dianping/cat

Conflicts:

cat-home/src/main/java/com/dianping/cat/report/task/alert/BaseAlert.java

cat-home/src/main/java/com/dianping/cat/report/task/alert/business/Busin
essAlert.java

cat-home/src/main/java/com/dianping/cat/report/task/alert/network/Networ
kAlert.java

cat-home/src/main/java/com/dianping/cat/report/task/alert/system/SystemA
lert.java
remove invalid inject compoenets
remove baseline service from some alerts
move runnable methods to BaseAlert
add code for user defined rules
remove unnecessory methods in BaseAlert
refactor business alert
remove invalid vars in HeartbeatAlert
modify broker-service
modify batch version3 length validate
modfiy jsp and broker
remove unnecessary vars from HeartbeatAlert
revert state hide nav
add CacheOutputTest for chen hub's requirement
Merge pull request #701 from jialinsun/master

modify jsp