added previous clinical trials look-up at registration stage

more PDS functions; new resource to monitor process_status

PDS interface now complete; minor bugfxes to test scripts to sync with recent tag class changes in user template

patched C::R::Misc::get_lab_test_results_for_lab_section() to return 0 on empty @lab_test_ids to avoid empty_list error further down; replaced SOAP::Lite with SOAP::WSDL PDS:: classes in C::R::PatientDemographics; patched error in lantronix.pl

refactored handling of optional_params in autosuggest to allow array of params

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

hilis3 conversion scripts for YHHN