Author: Charles Fulton
MDL-30482 create new capability for viewing glossary entries
http://git.moodle.org/gw?p=moodle.git;a=commit;h=03adb289ec8396e15f18cbb45dddca1e834ed1c9
http://github.com/moodle/moodle/commit/03adb289ec8396e15f18cbb45dddca1e834ed1c9
+ 2.2 en [glossary:read,mod_glossary]