Only show save/cancel if there are changes

lib/redux/app/app_state.dart

@@ -619,11 +619,9 @@ abstract class AppState implements Built<AppState, AppStateBuilder> {
       case TaskStatusEditScreen.route:
         return hasTaskStatusChanges(
             taskStatusUIState.editing, taskStatusState.map);
-
       case ExpenseCategoryEditScreen.route:
         return hasExpenseCategoryChanges(
             expenseCategoryUIState.editing, expenseCategoryState.map);
-
       case RecurringInvoiceEditScreen.route:
         return hasRecurringInvoiceChanges(
             recurringInvoiceUIState.editing, recurringInvoiceState.map);
@@ -638,7 +636,7 @@ abstract class AppState implements Built<AppState, AppStateBuilder> {
         return hasDesignChanges(designUIState.editing, designState.map);
     }
 
-    if (uiState.currentRoute.startsWith('/settings')) {
+    if (uiState.isInSettings) {
       return settingsUIState.isChanged;
     }
 

lib/redux/ui/ui_state.dart

@@ -197,7 +197,7 @@ abstract class UIState implements Built<UIState, UIStateBuilder> {
 
   bool get isViewing => !isEditing && !isEmailing;
 
-  bool get isInSettings => currentRoute.contains('settings');
+  bool get isInSettings => currentRoute.startsWith('/settings');
 
   bool get isPreviewing => previewStack.isNotEmpty;
 }

lib/ui/app/edit_scaffold.dart

@@ -38,6 +38,13 @@ class EditScaffold extends StatelessWidget {
     final store = StoreProvider.of<AppState>(context);
     final state = store.state;
 
+    bool showButtons = true;
+    if (state.uiState.isInSettings &&
+        !state.uiState.isEditing &&
+        !state.settingsUIState.isChanged) {
+      showButtons = false;
+    }
+
     return WillPopScope(
       onWillPop: () async {
         return true;
@@ -50,6 +57,7 @@ class EditScaffold extends StatelessWidget {
           automaticallyImplyLeading: isMobile(context),
           title: Text(title),
           actions: <Widget>[
+            if (showButtons)
               SaveCancelButtons(
                 saveLabel: saveLabel,
                 isSaving: state.isSaving,