Hierarchical galleries

Problem/Motivation

Duplicate of or closely related to #1037002: New feature: Gallery containers

I am looking for a D7 compatible replacement for Menalto's gallery2 application and the D6 module that integrates it. Media Gallery looks very nice but does not yet have all the features. I particularly want to draw your attention to the hierarchical structure. See http://www.bromleyartsociety.org.uk/gallery/v/members/. There are too many galleries here for the flat "All galleries" view that you have, and some have a third level (JWolfe for instance).

Proposed resolution

Media Gallery is complicated! but I wonder if you could make a gallery one of the types that one can link to when "adding files".

Remaining tasks

(reviews needed, tests to be written or run, documentation to be written, etc.)

User interface changes

The other features that need to go with a hierarchical gallery are

(1) Choosing one of the daughter nodes (an image or another gallery) as a highlight, so that there is an image to show for it.

(2) A breadcrumb type navigation aid at the top, to let one go up the hierarchy. Clicking on a daughter node goes down. I did look at the fields in Media Gallery to see if I could add a "Parent Gallery" which would be another way to do this, but there is a lot to learn before I could do it myself.