Notification of string changes

Author: Safat
MDL-77357 communication_matrix: Implement dynamic form fields


http://git.moodle.org/gw?p=moodle.git;a=commit;h=5fc1dedeae9ccab9c2b5c5b196ae7896339feec6
http://github.com/moodle/moodle/commit/5fc1dedeae9ccab9c2b5c5b196ae7896339feec6

+ 4.3 en [matrixroomtopic,communication_matrix]
+ 4.3 en [matrixroomtopic_help,communication_matrix]