Author: Mihail Geshoski
MDL-61903 webservice: Implement null privacy provider
Implement null privacy provider to rest, soap and xmlrpc webservice plugins.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=24a051e949819d0f06d574c8098cd68042cce6d3
http://github.com/moodle/moodle/commit/24a051e949819d0f06d574c8098cd68042cce6d3
+ 3.4 en [privacy:metadata,webservice_rest]
+ 3.4 en [privacy:metadata,webservice_soap]
+ 3.4 en [privacy:metadata,webservice_xmlrpc]