Important: #69909 - FAL-based Database Fields moved to integer

See forge#69909


The FAL-related fields in the database tables pages, pages_language_overlay and tt_content that contained a comma-separated list of paths to files were migrated at 6.2 with the shipped update wizards to IRRE fields. The database fields,, tt_content.image and now only contain numeric values, which are handled by the DataHandler and the Reference Index, holding the number of references. The database fields are now changed to be only int fields, instead fields of type text.