Author: Simey Lameze
MDL-52781 tool_uploaduser: add invalid data warnings if validation fails
http://git.moodle.org/gw?p=moodle.git;a=commit;h=94a578af827a4f888aa9bfe107a3b1e21c2fb177
http://github.com/moodle/moodle/commit/94a578af827a4f888aa9bfe107a3b1e21c2fb177
+ 3.1 en [invaliduserdata,tool_uploaduser]