Author: Mihail Geshoski
MDL-62341 privacy: Add link to previous page in viewall policies page
http://git.moodle.org/gw?p=moodle.git;a=commit;h=52415401b6105f0b0f8e62155c6bb8fd0e541cc2
http://github.com/moodle/moodle/commit/52415401b6105f0b0f8e62155c6bb8fd0e541cc2
+ 3.4 en [backtoprevious,tool_policy]