RfC594 - fix ajax mysql regex error (brackets/parens not balanced)

bugfix - ajax lookup referrers should require referrer to be active as well as referrer_department entry

modify registration search for referrer to match on any part of name

change ajax username search regex to RLIKE for NBT usernames; genomics_xml_queue timestamps error returns

added url_base to cgiapp_prerun(), refactored multiple calls to ->query to ; added part_number to storage module; restored 10-digit storage vialId + validation; bugfix to update_storage_vial(), failed validation due to duplicate vialId and old update method didn't do changes_only; added online request form link to guest user hello page; moved token generation from Resources menu() to Role::Resources::create_form_tokens() for sharing between menu() & hello()

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

extended storage functions - more params, ajax & server-side validation of input, edit of existing record, sign-out record

added last_login to admin user manager display; switched username lookup from drop-down to autosuggest

cosmetic refactor M::Ajax::get_parent_organisations()

unfixed M::Ajax::get_parent_organisations to skip var length > 6; added ability to search on 3-digit organisation code

added function to highlight if patient has previous request for clinical trial if not currently a clinical trial request; loop counter on request history

replaced ugly and opaque substitutions in ajax get_diagnoses() method with L::Utils::mysql_escape_parens method based on Regexp::Common 'pattern'

bugfix to allow ajax lookup for diagnostic term to use parentheses; turnaround chart function captues vars as hash not hashref to avoid changing self_url(); turnaround data filename for xl attachment reflects specimen type

replaced M::Ajax::check_exists() specific get_foo_count with generic get_objects_count

turnaround times 95-percentile charts; fixed ajax.t errs