Show restart message after successful dump-load/snapshot-restore

[rymsha]

It should be recommended, and in future versions even required to restart entire cluster (all nodes shutdown when all nodes stated up again) after successful
enonic snapshot restore (with any parameters)
and
enonic dump load (with any parameters)

Message could be something like:
"Please, restart all nodes of the cluster"

[alansemenov]

"Please, restart all nodes of the cluster"

This can be really confusing if you are not running XP in a cluster... I guess we have no way of figuring this out, so the message should be something like:

"The dump has been successfully loaded. If you are running XP in a cluster, make sure to restart all the nodes".
or
"The snapshot has been successfully restored. If you are running XP in a cluster, make sure to restart all the nodes".

[rymsha]

For a single node it should also be restarted.

[alansemenov]

Then it should be something node-unrelated, like "Please restart all running instances of XP"

[sigdestad]

Ack to Alan's suggestion