Test using inportal with advanced theme

1. Create new link in Website & Content → Structure & Data → Directory section
2. In themes/advanced/in-link/elements/links.elm.tpl add <inp2:AdminEditButton test="testvalue"/> just after <inp2:AdminEditButton/>
3. Goto Website & Content → Browse Website, navigate to Directory section and switch to Content Mode
4. Open Network tab in browser developer tools
5. Click on first Edit Item button near created link and check url with OnEdit event doesn't contains test=testvalue
6. Click on second Edit Item button near created link and check url with OnEdit event contains test=testvalue