Maintain internal definition of Creative Works
@till rightly pointed out that the Creative Commons page I linked does
not define what a Creative Work is. So, we cannot tell people to look
somewhere for a definition where it is not defined.
This edit creates a broad definition of what a Creative Work might be
while also reserving the right of the Fedora Council to change the
definition of a Creative Work in the future.
https://pagure.io/Fedora-Council/council-docs/pull-request/67#comment-118151
Signed-off-by: Justin W. Flory <git@jwf.io>