applied same server-side validation to storage vialId as already done by ajax, factored out common regex to LLU; moved M::Ajax::check_storage_vialId() to M::Validation::has_storage_vialId(); applied check that patient entry exists to C::Patient::_check_nhs_number_usage() for PID change, but not implemented as creation of new patient works OK; alphabetically sorted lims_messages.pl dfv section
