Branding correction: Case Files Professional

Corrects obsolete Case Files Pro/Professional 2.0 and Case Files 2.0 product labels in notices, documentation, database upgrade messages and the downloadable handbook. Application version constants, database migrations and protocols remain unchanged.

For the existing GIB site: back up first, extract this patch into the application root and overwrite the included files. No database upgrade is required for this wording correction. The GIB and Commercial full installers already contain it.
