Get the title of a license, which is a short translated description of the license's features (generally not very pretty though).
a license reference string in form of a URI, e.g. "http://creativecommons.org/licenses/by-nc-nd/2.0/"
the title of the license, or NULL if the license is unknown or no title is available.
Get the title of a license, which is a short translated description of the license's features (generally not very pretty though).