Author: Sam Hemelryk
MDL-23534 Added setting to set the site pages node to the sites shortname if desired
http://git.moodle.org/gw?p=moodle.git;a=commit;h=016ba63816d7321c44acb46620d1fafa34063c21
http://github.com/moodle/moodle/commit/016ba63816d7321c44acb46620d1fafa34063c21
+ 2.2 en [configusesitenameforsitepages,core_admin]
+ 2.2 en [usesitenameforsitepages,core_admin]