Author: Paul Holden
MDL-57208 user: select default homepage from user preferences page.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=719f76313c4a2e9606bfdf9b5673a976831a444b
http://github.com/moodle/moodle/commit/719f76313c4a2e9606bfdf9b5673a976831a444b
+ 3.8 en [defaulthomepageuser,core]
+ 3.8 en [defaulthomepageuser_help,core]