add the validate
modify the css
add the alert config
modify the ftl
refactor code
modify the event function
fix npe
fix bug
Merge pull request #644 from youyong205/master

fix many bug
Merge pull request #645 from jialinsun/master

modify jsp
modify the code
Merge pull request #646 from jialinsun/master

	add app database prune 3months ago date
modify the code
modify table provider
Merge pull request #647 from jialinsun/master

revert
modify the code
modify the jsp
fix bug
fix npe
modify the document