Notification of string changes

Author: Mark Johnson
MDL-84466 question/qbank: Update pending transfer notification
This updates the logic and text of the notification that is shown while
the question transfer task is still pending, to include instances of the
new transfer_questions task. It also ensures the notification is shown
if a user tries to access the question editing screen from outside the
question bank.


http://git.moodle.org/gw?p=moodle.git;a=commit;h=7b45a898b03b7774aaa5de953139ed1863767cf4
http://github.com/moodle/moodle/commit/7b45a898b03b7774aaa5de953139ed1863767cf4

+ 5.0 en [transfernotfinished,mod_qbank]