Link icons (#677)

* Add LinkIcon component

* Visual UI updates

- Refactor some components
- Clearer text display
- Add obvious chevron icon when a "tile" will take the user somewhere else

* dart format

* Adjust release notes

* Add visual separator

* Cleanup unused imports

lib/widget/refreshable_state.dart

@@ -42,7 +42,7 @@ mixin BaseWidgetProperties {
     // Override getTiles to replace the internal context
     return ListView(
       physics: AlwaysScrollableScrollPhysics(),
-      children: getTiles(context),
+      children: [Divider(), ...getTiles(context)],
     );
   }