changed $cols to $fields in App::DB to disambiguate from @cols; cosmetic change to gitlog() method for brevity; root ('/') route needs to capture query_param when forwarded; tests need cookie_headers for routes recently protected by authentication
reversed previous fix for init_db.sql schema, sqlite3 can execute multiple statements, failure in previous versions probably due to syntax error in users table insert statement; new routes.t file omitted from previous commit