new admin function to view cron log; new entries for contacts.lib

new_pnh_alert, juvenile_diagnosis_status_alert & chest_clinic_diagnosis_alert log sucessful emails to request_history; refactored some repeated code in ScriptHelpers

new PNH diagnosis alert cron; result summary section opens by default on report page

patched L::Local::DBIxSimple to skip warn if SKIP_RDBO_DEBUG flag set

general tidy up and bugfixes

error_log cron; missing data collection template for plasma-cell category

some cron edits

new register_and_error_codes cron

new crons

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