Add "[data-command-type="Post"]"
* Change primary keys of Kooboo_CMS_Labels to "SiteName" and "UUID"
* Add NotExpression and WhereNot feature.
* Add some more warning message when set the home page as unpublished.

* Clear some settings when copy a page.
Daily build 4.4.0.0422
Fixed copy site got empty content database issue.
Possible to extend the Diagnosis page buttons.
Merge branch 'master' of https://github.com/Kooboo/CMS