Author: Rossiani Wijaya
MDL-30910: Lesson Module: fix lesson progress bar for screen readers AMOS BEGIN CPY [progresscompleted, mod_lesson] AMOS END
http://git.moodle.org/gw?p=moodle.git;a=commit;h=af4de0a2c2b8cb8107a8392f2fe86f459d64512d
http://github.com/moodle/moodle/commit/af4de0a2c2b8cb8107a8392f2fe86f459d64512d
+ 2.3 en [progresscompleted,mod_lesson]