Author: Paul Holden
MDL-76123 course: multilingual module icon alt text attribute.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=75de5704def67cdf39164e1a7189496456ff5231
http://github.com/moodle/moodle/commit/75de5704def67cdf39164e1a7189496456ff5231
+ 4.1 en [activityicon,core]