Refactor app menu, add place lists

Unify sidebar, make everything route-based

app/routes/menu.js

@@ -0,0 +1,10 @@
+import Route from '@ember/routing/route';
+import { service } from '@ember/service';
+
+export default class MenuRoute extends Route {
+  @service mapUi;
+
+  activate() {
+    this.mapUi.showSidebar();
+  }
+}