modify the domain validate
fix domain blank bug
remove unused code
merge code
fix tps comupte
refactor LDAP
modify the version
add the release note
add transaction event piechart and statistics
Merge branch 'master' of https://github.com/dianping/cat
Merge pull request #687 from youyong205/master

refactor code
Merge pull request #686 from jialinsun/master

refactor LDAP, add transaction event piechart and statistics
Merge pull request #684 from leonindy/master

fix a bug: add delta feature for some metrics in heartbeat's history part
refactor visitor
amend buildExtensionGraph method
amend convert to delta method in heartbeat alert
Merge pull request #688 from jialinsun/master

refactor visitor
check whether data exists in heartbeat alert
Merge branch 'master' of github.com:dianping/cat