LPS-49395 continue when element has no attributes

The diffs may contain comments, for which `element.getAttributes()` will
return `null` instead of an empty attribute collection.
LPS-49337 Using correct time zone for rendering rules
LPS-49337 Automatic SF
sync-engine-shared - Change file paths for children as well
sync-engine-shared - Check on create events only
sync-engine-shared - Reuse and make public