Merge pull request #473 from leonindy/master

add more pages for alert doc
modify the sql
Merge branch 'master' of github.com:dianping/cat
refactor
milestone for app development
piechart develop
Merge branch 'master' of https://github.com/dianping/cat
app line chart success ratio show only 95-100%
modify title for tab of app
Merge pull request #474 from jialinsun/master

app spread modify, piechart implement, history comparison query2 copy query1 select value, success ration show 95-100%
Merge branch 'master' of github.com:dianping/cat
refactor code
Merge pull request #475 from youyong205/master

refactor
modify the version
modify the jsp
fix the cat init bug
refactor app code
modify double format
modify the problem filter
refactor