suppress rdf person information (occupation, locations, birth date + place) to avoid confusion with bio/description [Finishes #65317536]
note about possible alternate way to generate gexf network graph
document code for alternate plain-text labels in the network graph (disabled for now)
add base page template for content that should wrapped in a containing div
rename nav element from just 'networks' to 'networks & maps'
update d3 js force graph to use color scheme that works better with the site; make possible to enable labels at init
tweak chord category colors also (may fit better with site color scheme)
add data-prep logic to generate network of belfast group in two periods based on groupsheet authors, owners, and dates [#65595498]
add logic, links, preliminary explanatory text to display alternate model of belfast group network based on groupsheets [#65595498]