to make the Trumbowyg integration work as intended and allow html edits in the description and note field, the editing popover needs to remain open on link editing as this creates another popover.

old behaviour

1. description editing button opened description editing form
2. click on insert link closed the description editing form
3. clicking outside the editing form closed editing form

new behaviour

1. description editing button opened description editing form
2. click on insert link keeps the description editing form open and overlays the link editor
3. clicking outside the editing form does not close editing form

and a small fix for the URIScriptValidator.php for an error in the Debug logger