loader.svg:   http://jorgecardoso.eu/htmlblog/2012-10-07-Scalable%20Ajax%20Loading%20Indicator%20in%20SVG.html
agpl-v3.svg:  https://www.gnu.org/graphics/license-logos
cc-by-sa.svg: https://creativecommons.org/about/downloads
bmi.svg       https://commons.wikimedia.org/wiki/File:BodyMassIndex.svg
