Author: Sara Arjona
MDL-62670 policy: Remove footer link when there are not active policies
http://git.moodle.org/gw?p=moodle.git;a=commit;h=0138ad60b0b5d9b70c71e5978deb3e918832d316
http://github.com/moodle/moodle/commit/0138ad60b0b5d9b70c71e5978deb3e918832d316
+ 3.6 en [noactivepolicies,tool_policy]