LPS-50818 use correct DOM element name
LPS-50818 rename parentTitle to parentResource
LPS-50818 SF
LPS-50773 add slash to urlTitle when importing

Since LPS-50299 service expects urlTitles to have a leading slash.
LPS-50773 make service accept both forms of urlTitle

To maintain compatibility, accept both as valid when fetching/getting
KBArticles.
LPS-50773 use existing StringUtil api, no need for new method