Author: Andrew Nicols
MDL-77248 core: Move pre_enable_plugin_actions callback to enable_plugin
http://git.moodle.org/gw?p=moodle.git;a=commit;h=c3f0e5ddaa366348cca4e8b224b939f4268cab60
http://github.com/moodle/moodle/commit/c3f0e5ddaa366348cca4e8b224b939f4268cab60
+ 4.0 en [dpainfonotsigned,mod_bigbluebuttonbn]