Add links (e.g. to the LNCS proceedings) on the editions pages

[araschke]

On the conference edition pages (e.g. https://abz-conf.org/2024/) I would like to add some more (general) information, like a link to the corresponding LNCS proceedings or a link to the case study description (which is missing completely for most of the former editions!)

Although many informations can be found somewhere, I prefer less clicks to find them. 😃