Author: Stephan Robotta
MDL-83668 tiny: customize allowed HTML tags and attributes
http://git.moodle.org/gw?p=moodle.git;a=commit;h=9f467c9a003a2d7a238015e150cd4f6f7b0ca522
http://github.com/moodle/moodle/commit/9f467c9a003a2d7a238015e150cd4f6f7b0ca522
+ 4.4 en [extended_valid_elements,editor_tiny]
+ 4.4 en [extended_valid_elements_desc,editor_tiny]