Add GDPR

[Clementpr]

Need to add :

block/course_modulenavigation/classes/privacy/provider.php

<?php// …namespace block_course_modulenavigation\privacy;class provider implements     
# This plugin does not store any personal user data.    
\core_privacy\metadata\null_provider{}

Look at https://moodle.org/mod/forum/discuss.php?d=365857#p1475154 and specialy https://docs.google.com/document/d/1Y7n4Qkez4Tl83rWArOQPQCpE2NeSA2bUa8gOR2r_JFE/edit#