Author: Sara Arjona
MDL-69002 core_badges: add methods to support backpack validation
A more generic method has been added to the API to validate the
backpack connection (for now, there was only one method for
validating current backpack).
Besides, a renderer has been added to display this information
depending on the backpackid.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=fa1eab64476b4ab9ce0ce8c250a528236a79865e
http://github.com/moodle/moodle/commit/fa1eab64476b4ab9ce0ce8c250a528236a79865e
+ 3.7 en [backpackconnectionok,core_badges]
+ 3.7 en [backpackconnectionnottested,core_badges]
+ 3.7 en [testbackpack,core_badges]