Author: David Monllao
MDL-50661 theme_more: New small logo setting
Adding required bits so theme_more can also set a small logo.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=52d57db5c3781ee0282a1bfc3c166a225531a491
http://github.com/moodle/moodle/commit/52d57db5c3781ee0282a1bfc3c166a225531a491
+ 3.1 en [sitelogo,theme_more]
+ 3.1 en [sitename,theme_more]
+ 3.1 en [sitenamedesc,theme_more]
+ 3.1 en [smalllogo,theme_more]
+ 3.1 en [smalllogodesc,theme_more]