some function are now in Proxmox.Utils instead, so we have to use that
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
Reviewed-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
API calls return dates in seconds where the JS Date() constructor
wants millisecond.
For the correct computation use render_timestamp_human_readable.
A similar fix was commited in 4092576b1b
for VMs but Containers missed the fix.
