Notification of string changes

Author: jerome mouneyrac
community block MDL-24826 change 'Add to community block' message


http://git.moodle.org/gw?p=moodle.git;a=commit;h=48cff382d18fdb1845490cdbed63c822c1100fd1
http://github.com/moodle/moodle/commit/48cff382d18fdb1845490cdbed63c822c1100fd1

+ 2.0 en [addedtoblock,block_community]