this adds a 'Summary' panel to the datastores, similar to what we have
for PVE's nodes/guests/storages
contains an info panel with useful information, a comment field, and
the charts from the statistics panel (which can be deleted since it is
not necessary any more)
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
Dominik Csapak