Remove misleading comment

Signed-off-by: David Greaves <david.greaves@jollamobile.com>
Call VBoxControl as root

Signed-off-by: David Greaves <david.greaves@jollamobile.com>
Refresh multiple targets at once

Signed-off-by: David Greaves <david.greaves@jollamobile.com>
[sdk-manage] add --refresh-all; add --upgradable and --refresh to --sdk and --target
[sdk-vm] Add sdk-refresh .service and .timer to update SDK repos regularly
Fix information.service warning

Signed-off-by: David Greaves <david.greaves@jollamobile.com>