Author: Helen Foster
MDL-52645 lang: Merge English strings from the en_fix language pack
http://git.moodle.org/gw?p=moodle.git;a=commit;h=8bd563e53fb7a0d3016675df890e7d58a84304ef
http://github.com/moodle/moodle/commit/8bd563e53fb7a0d3016675df890e7d58a84304ef
+  3.1 en [useridlistnotcached,mod_assign]
+  3.1 en [postmailinfolink,mod_forum]
+  3.1 en [sitenamedesc,theme_clean]
+  3.1 en [smalllogodesc,theme_clean]
+  3.1 en [sitenamedesc,theme_more]
+  3.1 en [smalllogodesc,theme_more]