Bug 28316: (QA follow-up) Make clean_search_term public
With all the work that's gone into improving the internal
_clean_search_term method I feel we should expose it publically as it's
going to be more widely helpful
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com> Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com> Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org> Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>