feat: Update translations, finish saved views rework, some other fixes

lib/core/widgets/dialog_utils/pop_with_unsaved_changes.dart

@@ -0,0 +1,31 @@
+import 'package:flutter/material.dart';
+import 'package:paperless_mobile/core/widgets/dialog_utils/unsaved_changes_warning_dialog.dart';
+
+class PopWithUnsavedChanges extends StatelessWidget {
+  final bool Function() hasChangesPredicate;
+  final Widget child;
+
+  const PopWithUnsavedChanges({
+    super.key,
+    required this.hasChangesPredicate,
+    required this.child,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return WillPopScope(
+      onWillPop: () async {
+        if (hasChangesPredicate()) {
+          final shouldPop = await showDialog<bool>(
+                context: context,
+                builder: (context) => const UnsavedChangesWarningDialog(),
+              ) ??
+              false;
+          return shouldPop;
+        }
+        return true;
+      },
+      child: child,
+    );
+  }
+}

lib/core/widgets/dialog_utils/unsaved_changes_warning_dialog.dart

@@ -0,0 +1,24 @@
+import 'package:flutter/material.dart';
+import 'package:paperless_mobile/core/widgets/dialog_utils/dialog_cancel_button.dart';
+import 'package:paperless_mobile/core/widgets/dialog_utils/dialog_confirm_button.dart';
+import 'package:paperless_mobile/generated/l10n/app_localizations.dart';
+
+class UnsavedChangesWarningDialog extends StatelessWidget {
+  const UnsavedChangesWarningDialog({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return AlertDialog(
+      title: Text("Discard changes?"),
+      content: Text(
+        "You have unsaved changes. Do you want to continue without saving? Your changes will be discarded.",
+      ),
+      actions: [
+        DialogCancelButton(),
+        DialogConfirmButton(
+          label: S.of(context)!.continueLabel,
+        ),
+      ],
+    );
+  }
+}