Author: Andrew Davis (andyjdavis)
MDL-26105 blocks: fixed some php errors and made a help string better
http://git.moodle.org/gw?p=moodle.git;a=commit;h=fb794ab73cdf294affb3e7539afc7656324adfe6
http://github.com/moodle/moodle/commit/fb794ab73cdf294affb3e7539afc7656324adfe6
+ 2.1 en [createdat_help,core_block]