Author: Sara Arjona
MDL-43938 badges: Bagde names are not unique anymore
The restriction for the badge name to be unique has been removed so,
from now on, the badge names can be duplicated, even inside a course.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=11b276fc1b53082f3038f18428a6a60f1d9884fc
http://github.com/moodle/moodle/commit/11b276fc1b53082f3038f18428a6a60f1d9884fc
+ 4.5 en [newbadgedeprecated,core_badges]