feat: more easter eggs + version checking

lib/l10n/app_en.arb

@@ -280,6 +280,8 @@
   "offlineDescription": "No connection to the server. The tablet keeps working: everything is sent as soon as the connection is back.",
   "syncProblem": "Sync problem",
   "syncProblemDescription": "Changes from the website don't reach this tablet. Error:",
+  "appUpdateRequired": "App update required",
+  "appUpdateRequiredDescription": "The website no longer accepts this version of the app. The bar keeps working and everything is sent once the app is updated. Update it in Settings.",
   "syncNow": "Sync now",
   "syncing": "Syncing…",
   "lastSync": "Last sync: {time}",

lib/l10n/app_localizations.dart

@@ -1664,6 +1664,18 @@ abstract class AppLocalizations {
   /// **'Changes from the website don\'t reach this tablet. Error:'**
   String get syncProblemDescription;
 
+  /// No description provided for @appUpdateRequired.
+  ///
+  /// In en, this message translates to:
+  /// **'App update required'**
+  String get appUpdateRequired;
+
+  /// No description provided for @appUpdateRequiredDescription.
+  ///
+  /// In en, this message translates to:
+  /// **'The website no longer accepts this version of the app. The bar keeps working and everything is sent once the app is updated. Update it in Settings.'**
+  String get appUpdateRequiredDescription;
+
   /// No description provided for @syncNow.
   ///
   /// In en, this message translates to:

lib/l10n/app_localizations_en.dart

@@ -860,6 +860,13 @@ class AppLocalizationsEn extends AppLocalizations {
   String get syncProblemDescription =>
       'Changes from the website don\'t reach this tablet. Error:';
 
+  @override
+  String get appUpdateRequired => 'App update required';
+
+  @override
+  String get appUpdateRequiredDescription =>
+      'The website no longer accepts this version of the app. The bar keeps working and everything is sent once the app is updated. Update it in Settings.';
+
   @override
   String get syncNow => 'Sync now';
 

lib/l10n/app_localizations_nl.dart

@@ -873,6 +873,13 @@ class AppLocalizationsNl extends AppLocalizations {
   String get syncProblemDescription =>
       'Wijzigingen van de website komen niet op deze tablet aan. Fout:';
 
+  @override
+  String get appUpdateRequired => 'App-update vereist';
+
+  @override
+  String get appUpdateRequiredDescription =>
+      'De website aanvaardt deze versie van de app niet meer. De bar blijft werken en alles wordt verstuurd zodra de app geüpdatet is. Update hem via Instellingen.';
+
   @override
   String get syncNow => 'Nu synchroniseren';
 

lib/l10n/app_nl.arb

@@ -280,6 +280,8 @@
   "offlineDescription": "Geen verbinding met de server. De kassa werkt gewoon verder: alles wordt verstuurd zodra er weer verbinding is.",
   "syncProblem": "Synchronisatieprobleem",
   "syncProblemDescription": "Wijzigingen van de website komen niet op deze tablet aan. Fout:",
+  "appUpdateRequired": "App-update vereist",
+  "appUpdateRequiredDescription": "De website aanvaardt deze versie van de app niet meer. De bar blijft werken en alles wordt verstuurd zodra de app geüpdatet is. Update hem via Instellingen.",
   "syncNow": "Nu synchroniseren",
   "syncing": "Bezig met synchroniseren…",
   "lastSync": "Laatste sync: {time}",