Details - Add Creative Commons Licence

[radiorob]

Previously in PEX

• User can select licence for media from drop down during media uploads (set defaults in media settings)
• Graphic for selected licence is Displayed in >Details
• Graphic and Link to licence displays in API for public access

https://github.com/openbroadcaster/pex/blob/master/html/license_addedit.html

Copyright Creative Commons License Show License Description

Copyright Statement

https://github.com/openbroadcaster/pex/blob/master/db/cc_license.sql