Adding some initial glacier info #sotmus2024
adding Chaney Glacier for SotM workshop
adding some images to the Glacier relation
adding Extremadura; deleting dupe relation
naming and renaming to standardize segments
adding Castile y León (pt 2) and conflating modern and historical segments
adding Castile y León (pt 1) and conflating modern and historical segments
adding a node to test search; ref: user:alexhisto
adding a source[:#]:view tag to highlight some allmaps dynamics
converting some source-related key tags from source[:#]:tms to source[:#]:tiles
adding a Basque Country relation; conflating modern and historical boundary segments
adding a source map for NM teritory
aligning First French Empire relations, adding wiki tags, a few names, and a chronology relation
adding some sources & wiki tags
moving some admin_levels down, as they were components of the First French Empire `empire=ffe`
changing name of a maritime boundary segment