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=885378ca4ec4ba66319d07c47e79ae4ba6d3d379
http://github.com/moodle/moodle/commit/885378ca4ec4ba66319d07c47e79ae4ba6d3d379
+ 3.5 en [privacy:metadata,webservice_rest]
+ 3.5 en [privacy:metadata,webservice_soap]
+ 3.5 en [privacy:metadata,webservice_xmlrpc]