[refactor][xs]: change extension on templates from tmpl to html.
[refactor][xs]: move data csv files to data directory.
[#1,site][m]: working render to html pages for each body.
[#1,site][s]: crude index page working.
[refactor][xs]: move create_keys.py to scripts.
[#1,site][m]: site build operational including ok front page, json etc.
[data,script][s]: remove unnecessary quoting on fields in data.