lxc/MPEdit: rework for advanced options

lxc/MPEdit: rework for advanced options

this is a complete rework of the inputpanel (long overdue)
it uses a viewModel and viewcontroller to avoid the
multiple is zfs/root/bind checks and concentrate them
in one place

also some features get optimized (e.g. the noreplication checkbox)

adds a setNodename to the DiskStorageSelector so that we can bind
the nodename there

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>