Author: Paul Holden
MDL-77874 tiny_link: define help link text language string.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=aaf231551a368a8f7d5cb25152c4058145e63336
http://github.com/moodle/moodle/commit/aaf231551a368a8f7d5cb25152c4058145e63336
+ 4.2 en [helplinktext,tiny_link]