Author: Eloy Lafuente (stronk7)
MDL-28048 glossary - fix double ampersand & missing string
http://git.moodle.org/gw?p=moodle.git;a=commit;h=b86f9306476da96c0fbabe4761329c98c1740ff9
http://github.com/moodle/moodle/commit/b86f9306476da96c0fbabe4761329c98c1740ff9
+ 2.2 en [duplicatecategory,mod_glossary]