Fix facet charts tpl

• Fix facet charts tpl

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• [FIX] charts: Fix typo from a90f097f

• [FIX] charts: Fix facet charts tpl following the smarty5 changes - preg_match and preg_match_all smarty "functions" do not return the $matches param by reference any more so use regex_replace to simplify the facet label and then split it.

• [FIX] charts: Make it possible to have more than one chartjs plugin per page again

See merge request !5155 (merged)

(cherry picked from commit d327e4ac)

eeb53cd3 [FIX] charts: Make it possible to have more than one chartjs plugin per page again 996a7f2a [FIX] charts: Fix facet charts tpl following the smarty5 changes -... 10ab9d5f [FIX] charts: Fix typo from a90f097f

Co-authored-by: Jonny Bradley jmail@nospaces.net