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 old API
LPS-50773 SF
LPS-50396 Creating a proper object for retrieving calendar info
LPS-50396 SF
LPS-50396 SF
LPS-50396 - Source formatting
LPS-50396 Liferay 6.2.x YUI does not support valuechange in selects (see YUI issue #1184)
LPS-50396 - General source formatting