ui: factor out NodeInfoPanel

so that Dashboard.js will be less cluttered when we add more information
there.

No functional change, but reworked the fingerprint button disabling to
use a property of the view instead of a viewmodel

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

www/Makefile

@@ -82,6 +82,7 @@ JSSRC=							\
 	panel/AccessControl.js				\
 	panel/StorageAndDisks.js			\
 	panel/UsageChart.js				\
+	panel/NodeInfo.js				\
 	ZFSList.js					\
 	DirectoryList.js				\
 	LoginView.js					\