Title search now searches on lightly normalised title string (lowercase, diacritics stripped, punctuation removed) with wildcard at end. closes #409. Warning - re-generation of normalised titles needed to make sure latest title norm code applied to all titles in db
ISBN regexp corrected to exactly as in import spec. Closes #407, fixes #407
Corrected error message when tipp row import contains a repeated identifier (Reported as a repeated issn) fixes #389, closes #389