Ensure ordering in actions overview
requested to merge 450-fix-ordering-of-device-and-platform-mounts-in-configuration-actions into develop
In case we have the very same dates for the actions in the configurations actions tab, then we now have a fixed ordering.
The default ordering is to have the latest actions above (so being above in this list means "more recent").
Unmounts are before mounts as they need to be more recent (we can only unmount if we mounted before.
Also the device mounts are before the platform mounts (as the parent platform must be mounted before).
And device platform unmounts are before device mounts (we can only unmount a platform if there is no device left).
Closes #450 (closed)