Author: Andrew Davis (andyjdavis)
MDL-27829 blocks: added a warning to the block settings page that displays when the block was using a block type we dont let users select anymore
http://git.moodle.org/gw?p=moodle.git;a=commit;h=d097ad564df6facad0e6cf8937b91610eeb61d62
http://github.com/moodle/moodle/commit/d097ad564df6facad0e6cf8937b91610eeb61d62
+ 2.1 en [pagetypewarning,core_block]