added new validation constraint get_hmrn_param_constraints() - enables DFV validation of int & decimal HMRN data types so can reject invalid data

added report survey notification to home page

bugfixes and tt tweaks

general tidy up and bugfixes

new screen_category table; moved screens 'type' col to category_id; modified all screening terms & screening tests admin functions to accomodate new screen_category table; removed ajax validation from screen description & lab test field_label as these use 2 & 3-col unique keys so can't be validated by AJAX; email reports function uses users secure email address as sender; modifed portal_access function to supply SHA1 hash of current date - so failed login not sent back to portal page without explanation; modified mail_reports.pl to use item names instead of table id accessors

added text wrap to LIMS::error() message for template; added resources test for long error message; some hmrn templates changes

modifed cgi scripts with pathnames for production server

new user registration admin function checks role for case-sensitivity and highlights if different/absent