LPS-48076 don't show siblings on Article portlet
LPS-50608 use correct identifier / finder

Instead of the classPK, the classNameId was assigned as folder id.

Also, when getting the current article, the resourcePrimKey was passed
to a finder that expected the kbArticleId.
LPS-50606 don't show combo when there is only one folder
LPS-50301 make friendly URL control consistent
LPS-50301 Source formatting
LPS-50301 SF