Expose both the HIMN network and any VIFs associated with the HIMN
network using XenCenter when the "View->Show Hidden Objects" option
is displayed. However the shown HIMN should not be able to autoplug,
edit or delete.
-Reverted changes of CA-109242 (PR-62 on GitHub)
-Network tab: now to show '<None>' instead of '-' as Link Status (for pools: when the network has no PIFs; for hosts: when the network has no PIF )
Signed-off-by: Gabor Apati-Nagy <gabor.apati-nagy@citrix.com>