moved process_request() & get_next_location() methods into own module for use in other .t files

added test error to save_document() methods; create_document() flash message adjusted for update or input; refactored infolib.t to inspect redirected content [see HTTP-Cookies.txt chatgpt summary]; bugfix to dpw/record.tt

converted dpw section to SPA using htmx; renamed moongate new-document route to match other route prefixes; removed unused route names; removed unused all_documents() subs from all route files; new test file for htmx requests