Set the default state to disabled for message contact request
notifications for the web process. The user is notified about contact
requests in the message drawer so it's unnecessary to also generate
a notification in the notification popover for them.
Since some versions ago the app allows a good user control of notifications.
This is why we should be enabling more notifications (mostly for students) by default.
This patch adds asynchronous backup and restore functionality
to Moodle. This is an optional feature and is not enabled by
default. It can be enabled by site administrators.
Asynchronous backup and restores are actioned by the Moodle
adhoc task API. The progress of backup and restores is
displayedin the Moodle UI. Users can also be sent a message
when a backup or restore operation completes via the
Moodle messaging API.
The new messaging default settings can be set in messages.php and deployed
during installation. This also ensures the removing of settings on plugin
uninstallation and contains the update script to populate current default
settings on the existing system when the new feature is introduced.
For security reason we have to avoid using library functions in upgrade
function, so we set defaults the blind way. At this point we do not expect
plugins to have individual messaging defaults presets anyway. The site
defaults are the same as were set for each user using
message_set_default_message_preferences function.
Signed-off-by: Ruslan Kabalin <ruslan.kabalin@luns.net.uk>