parameters_explode(): trim names and values
remove dead code
remove dead code
new leitvariable: "db_application_instance" (to check for correct db), "keep_log_seconds" (to limit log life time)
check for correct db instance
sessions, logbook: do not include application instance name in field `application`
re-order main menu, and corresponding hugemenu on start page
new: {selector,filter}_application(); repair choices_scripts(), filter_thread(); set (higher) priority for filter_reset_button()
fix persistent_vars_view(), add column `application`
sql_query(): simplify parsing of selects, avoid deprecate syntax in sql_logbook_max_logbook_id(); work on pruning and garbage collection funcions