Author: jfederico
MDL-73200 mod_bigbluebuttonbn: Replaced credentials provided by default
http://git.moodle.org/gw?p=moodle.git;a=commit;h=cea29ffebc029add2b275e661fa1878295cbf10f
http://github.com/moodle/moodle/commit/cea29ffebc029add2b275e661fa1878295cbf10f
+ 4.0 en [config_shared_secret_description,mod_bigbluebuttonbn]
+ 4.0 en [index_error_checksum,mod_bigbluebuttonbn]