Notification of string changes

Author: Marina Glancy
MDL-62134 tool_dataprivacy: privacy manager wrapper
If exception occurs in one plugin implementation do not fail the whole job but
instead send a message to DPOs with the exception details


http://git.moodle.org/gw?p=moodle.git;a=commit;h=3f18d2af9a05317994ee5853229da238f43c6492
http://github.com/moodle/moodle/commit/3f18d2af9a05317994ee5853229da238f43c6492

+ 3.5 en [exceptionnotificationsubject,tool_dataprivacy]
+ 3.5 en [exceptionnotificationbody,tool_dataprivacy]
+ 3.5 en [messageprovider:notifyexceptions,tool_dataprivacy]