REQ: Backend option to limit licenses to only CC Open Content compatible licenses (CC BY, BY-SA, and 0)

[aharonium]

Request to include a back-end option to limit available licenses to only CC Open Content compatible licenses (CC BY, BY-SA, and 0). This option is really needed for multi-user open-source projects that are powered by compatible open content licenses. The addition of NC or ND licensed content by any user would present a poison pill for a project with CC BY-SA as the base license.

for an example of a multi-user Open Content project using such a schema, see [פרויקט הסידור הפתוח ✍ • the Open Siddur Project]](http://opensiddur.org/)
(Note this site also provides a notice of the addition of "vanilla" copyrighted content included under a Fair Use claim.)

Cf. For a comparable example of a plug-in providing this facility, see: Open Content License Generator: A Wordpress Plugin for selecting and displaying an Open Content compatible license for posts • Aharon's Omphalos