restore labs_list detailed infos for print_directory (contact, institution, search links if no homepage)

add a function changeTargetId to fix scope where ui.item.id never changes because still interpreted in its orginal context

less mentions and pointers about doors in various user messages (todo revert after Doors goes out of beta)

new function-related modules dbcrud and dbdatapi refactored from project-history-related modules services/db, get_field_aggs, and services/db_to_tina_api

gevent workers are async and reduce time out problems for pending long ajaxes

finally harmonize all date processing with DB type date and timestamp, python conversion to and from + fix job_looking_date pre-selection + add job_looking boolean to DB