LPS-32192 rename "select existing" for "select" or "select in" and change the icon to make it conistant with the rest of the portal
LPS-32192 move buttons below the search iterator - no logic changes
LPS-32192 hide pagination when not needed (reduce noise in the UI)
LPS-32192 move method to Java class for reusing it (no logic changes)
LPS-32192 support for null tags and categories
LPS-32192 Format source
LPS-32192 Source formatting