Author: Pau Ferrer Ocaña
MDL-67853 message: Remove on/offline settings on message preferences
http://git.moodle.org/gw?p=moodle.git;a=commit;h=d74bd798b6e27eb07f5547ed83d938dec6864cdc
http://github.com/moodle/moodle/commit/d74bd798b6e27eb07f5547ed83d938dec6864cdc
+ 4.0 en [providerenabled,core_message]
+ 4.0 en [providerprocesorislocked,core_message]
+ 4.0 en [providerprocesorisdisallowed,core_message]
+ 4.0 en [sendingviaenabled,core_message]
+ 4.0 en [sendingvialocked,core_message]