bugfix: diff directive undifined exception

add logError back

add index for table AppNamespace and Cluster

return default cluster's namespace when custom cluster's namespace ne…

remove unnecessary logError

remove unnessary Tracer.logError

add cat restapi transaction & fix email windows outlook bug

remove unnessary Tracer.logError

bugfix: return empty element array when get array property

Optimize schema and default jvm setting for config service

bugfix: email template placeholder has conflict with spring placeholder

bugfix: record empty commit when only modify item comment

refactor project config

add namespace publish info tips

UI handle public namespace not exist situation

link namespace show public namespace's item & refactor bean & improve…

fix jetty test version

update spring version