add check duplicate feature for app name
remove invalid alert
change default rule of business alert
edit documents
stage current work
stage current work
work around the tricky bug about machine config page
Merge pull request #710 from youyong205/master

refactor code
improve machine config page
resolve conflicts
Merge pull request #711 from leonindy/master

improve machine config page, add a command constrain, modify default monitor rule
merge code