add activity page for app
add title to app alert config page
add api for add and delte apps
fix delete app bug
add metricRuleConfigUpdate page to config tree, default invisible
modify the plugin sql
fix the transaction analyer problem
delete unused code
add app command modify handler
add command modify pages
Merge branch 'master' of https://github.com/dianping/cat

Conflicts:

cat-core/src/main/java/com/dianping/cat/config/app/AppConfigManager.java
	cat-home/src/main/java/com/dianping/cat/report/page/app/Payload.java
	cat-home/src/main/webapp/WEB-INF/tags/body.tag
	cat-home/src/main/webapp/jsp/system/configTree.jsp
move duplicate tags caused by merge
Merge pull request #556 from leonindy/master

add some features for app command module, make global config page invisiable
Merge branch 'master' of github.com:dianping/cat
modify the index
modify the jsp
Merge pull request #557 from youyong205/master

modify the sql
move app api from config part to report part for filter constraint
add app command doc
modify the jsp