only tag non-empty filter queries

(tagging an empty query causes an error)
edfu: symlink/rename for new Formats Partials
edfu: configure restrictions into queries (instead of fq)

to allow retrieving szene records
edfu: rework szene markers in temple detail

* separately load their rects from the index as JSON
* add _all_ available markers to the detail plan
* ensure the correct ones are highlighted
* use jQuery’s data for attaching data to elements
* CSS to adjust the display