Changed logic too support unlimited levels of alphabetical tabs.

Save current changes to a step before doing a restore.
Only show expander if a step has children
Added Westinghouse RO Copy logic to Context Menu for Grid.

PROMS/Volian.Controls.Library/DisplayHistory.cs

@@ -575,6 +575,7 @@ namespace Volian.Controls.Library
 		}
 		private void btnRestore_Click(object sender, EventArgs e)
 		{
+			MyEditItem.SaveContents();
 			TreeNode tn = tvAudits.SelectedNode;
 			if (tn.Tag is ContentAuditInfo)
 			{