feat(ui): add better descriptors

lib/main.dart

@@ -180,7 +180,7 @@ class _ChooseStationPageState extends State<ChooseStationPage> {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-      appBar: AppBar(title: const Text('RoutePicker')),
+      appBar: AppBar(title: const Text('Start a Journey')),
       body: Center(
         child: Column(
           children: [
@@ -194,7 +194,7 @@ class _ChooseStationPageState extends State<ChooseStationPage> {
               builder: (BuildContext context, SearchController controller) {
                 return SearchBar(
                   controller: controller,
-                  hintText: 'Search for a Station',
+                  hintText: 'Search your start Station',
                   padding: const WidgetStatePropertyAll<EdgeInsets>(
                     EdgeInsets.symmetric(horizontal: 16.0),
                   ),
@@ -323,12 +323,27 @@ class _ChooseDeparturePageState extends State<ChooseDeparturePage> {
     return Scaffold(
       appBar: AppBar(
         title: Text(
-          'RoutePicker for ${widget.startStation.name} // ${widget.journeyId}',
+          'Departures for ${widget.startStation.name}',
         ),
       ),
       body: Center(
         child: Column(
           children: [
+            Builder(
+              builder: (context) {
+                if (widget.arrival != null) {
+                  return ListTile(
+                    title: Text(
+                      'arrive at ${widget.arrival?.arrivalTime}',
+                    ),
+                  );
+                } else {
+                  return ListTile(
+                    title: Text(''),
+                  );
+                }
+              },
+            ),
             Expanded(
               child: SizedBox(
                 height: 400,
@@ -439,7 +454,7 @@ class _ChooseArrivalPageState extends State<ChooseArrivalPage> {
     return Scaffold(
       appBar: AppBar(
         title: Text(
-          'Arrivals for ${widget.departure.vehicleName}// ${widget.journeyId}',
+          'Arrivals for ${widget.departure.vehicleName}',
         ),
       ),
       body: Center(
@@ -644,7 +659,7 @@ class _JourneyOverviewPageState extends State<JourneyOverviewPage> {
               height: 100.0,
               child: FittedBox(
                 fit: BoxFit.contain,
-                alignment: Alignment.centerLeft,
+                alignment: Alignment.center,
                 child: Text("Your Journeys"),
               ),
             ),