charters-on-map could have a link to the fond/collection in the head

Created by: GVogeler

Currently the main display of charters on a map (e.g. http://monasterium.net/mom/IT-BSNSP/08-S_Maria_della_Grotta/fond/charters-on-map?) does not contain any link to the fond or collection which is diplayed: This makes it difficult to navigate back to the source of the data. I would suggest to a this link to fond label in the head.