wui: added html item delegate for log entries

now task ids are html links to task detail page
wui: adding parameters to filter audit log by event and userid

white-list and black-list regexp for both event and userid:
webconsole.showaudituser.regexp:global:WebConsole
webconsole.hideaudituser.regexp:global:WebConsole
webconsole.showauditevent.regexp:global:WebConsole
webconsole.hideauditevent.regexp:global:WebConsole