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=2d90a7d91ae8b34ee6fddecfd352d3e2cef315a0
http://github.com/moodle/moodle/commit/2d90a7d91ae8b34ee6fddecfd352d3e2cef315a0
+ 3.5 en [noactivepolicies,tool_policy]