CSPACE-2418: Services can now accept, as input to date fields in their record types...

CSPACE-2418: Services can now accept, as input to date fields in their record types, dates in a variety of representation formats, specified in per-tenant configuration.  This will permit free text entry of dates in formats familiar to users in various countries, such as 'MM/dd/yyyy' (USA), 'dd/MM/yyyy' (UK), and 'dd.MM.yyyy' (one of several formats used in Denmark).  No validation is yet performed, and dates in unrecognized formats, that cannot be parsed and converted to the ISO 8601-based formats required by Nuxeo and MySQL, are silently dropped, as they were even before this check-in.  This is addressed by a new bug, CSPACE-2653.