referral_source autosuggest loads only active records for registrtaion and request edit functions; new column is_active on referral_sources table; refactored list_all_screen_tests table to show screen categories}
git-svn-id: https://jti.org.uk/svn/hmds_lims/trunk@1254 4177bd82-f056-0410-812d-caef170e3fa0