ui: Fix autopush/canary label & track height

Change-Id: I773e22e7e5ff99858d601f8f8af3c58193d6a10c
diff --git a/ui/src/frontend/track_panel.ts b/ui/src/frontend/track_panel.ts
index 0aa518a..10b2c53 100644
--- a/ui/src/frontend/track_panel.ts
+++ b/ui/src/frontend/track_panel.ts
@@ -241,6 +241,9 @@
 }
 class TrackComponent implements m.ClassComponent<TrackComponentAttrs> {
   view({attrs}: m.CVnode<TrackComponentAttrs>) {
+    // TODO(hjd): The min height below must match the track_shell_title
+    // max height in common.scss so we should read it from CSS to avoid
+    // them going out of sync.
     return m(
         '.track',
         {