LPS-48149 remove reference to `setLinkable` and override `isLinkable`

The method `setLinkable` is not available in ee-6.2.x.
LPS-48227 Resolve plugin dependencies from Ivy only if local ivy.xml is present
LPS-48225 Throw exception when imported file entries are not accompanied by an intro file entry
LPS-48225 Source formatting
LPS-48180 Creating CalendarBookingIterator; moving iteration logic to it
LPS-48180 SF
LPS-48180 SF
LPS-48180 Auto SF
LPS-48180 SF
LPS-48076 add methods to retrieve next and previous KB article
LPS-48076 show previous and next article just below the content
LPS-48076 add basic styles
LPS-48076 Generate services as in BlogsEntryLocalServiceImpl and use them in the view
LPS-48076 Do not show prev and next link if there is no prev and next article
LPS-48076 We need a more complex alg because we need to consider the hierarchy when calculating next and prev so we can jump to a different level when moving back and forth.
LPS-48076 Make it more similar to blogs using icons
LPS-48076 Use next/prev only in mobile and use the title in the rest of the devices. Use ellipsis to shorten the title.
LPS-48076 Separate CSS skin from structure
LPS-48076 Format source
LPS-48076 Not sure why this was removed