Make order in treeview consistent.

src/tree_view.rs

@@ -22,7 +22,7 @@ pub struct TreeView {
 
 #[derive(Clone, Serialize, Deserialize)]
 struct TreeViewNode {
-    id: usize,
+    id: String,
     status: DiagnosticStatus,
     children: Vec<TreeViewNode>,
 }
@@ -39,13 +39,17 @@ impl TreeView {
         for child in children {
             let status = graph.value_of(&child)?;
             let node = TreeViewNode {
-                id: child.clone(),
+                id: graph.full_name_from_key(&child)?,
                 status: status,
                 children: Self::get_nodes(&child, &graph)?,
             };
 
             to_ret.push(node);
         }
+
+        // Make the order of same id'd (named) entries consistent.
+        to_ret.sort_by(|a, b| a.id.cmp(&b.id));
+
         return Ok(to_ret);
     }