Add doctest for None in GravatarUrl field
Add doctest for None in GravatarUrl field

sprucedev/DockCI,RickyCook/DockCI,RickyCook/DockCI,RickyCook/DockCI,sprucedev/DockCI,sprucedev/DockCI-Agent,sprucedev/DockCI,sprucedev/DockCI,RickyCook/DockCI,sprucedev/DockCI-Agent