The SVG icons in this directory are from the "Font Awesome" project.
They are published under the CC BY 4.0 License. See 
https://fontawesome.com/license/free for further information.

The SVG files have been edited to change the fill color from 
the "currentColor" to "#cccccc". 
For "sync-alt-solid.svg", it was set to #ffffff, to be used
on a Cesium-styled button.
For "times-solid.svg" and "check-solid.svg" it was set to #ff0000 and #00ff00 respectively.