edfu: cropped image files for temple details

see:
https://github.com/subugoe/edfu-daten/commit/e4596712279c0fd2fd8899337ce5589824f8ab7d
edfu: Improve temple detail display

* use new cropped map images
* scale image to not overlap the map
* add heading for room name
* highlight all relevant scenes on the detail map
* do not hide the detail view on un-hover
* only recreate the detail view when hovering on a different image