fix a bug when finding appropriate id and there is no app activity command
Merge branch 'master' of https://github.com/dianping/cat
add/delete default rules when add/delete app commands by api
add domain select for app page
Merge pull request #560 from leonindy/master

fix a bug when finding appropriate id and there is no app activity command
Merge branch 'master' of github.com:dianping/cat