Fix #245 and #234 by adding a no tag mention at the bottom of the properties modal

Add field in .arb file
Remove preference import in edit view
Add conditional Text if tag list is shorter than 1

Author: Renarde-dev

l10n/app_en.arb

@@ -39,7 +39,7 @@
     "piwigoServer_emptyJSONobject": "Piwigo server did return an empty JSON object.",
 
 
-
+    "noTags": "No tags",
 
     "coreDataStore_WarningTitle": "Warning",
     "coreDataStore_WarningMessage": "A serious application error occurred while Piwigo tried to read the data cache. A new cache has therefore been created.",

lib/components/modals/image_info_modal.dart

@@ -93,16 +93,16 @@ class ImageInfoModal extends StatelessWidget {
             FormSection(
               title: appStrings.tags,
               titlePadding: const EdgeInsets.symmetric(horizontal: 8.0),
-              child: Wrap(
+              child: image.tags.length < 1 ? Align(child: Text(appStrings.noTags)) : Wrap(
                 spacing: 8.0,
                 children: List.generate(
                   image.tags.length,
-                  (index) => PiwigoChip(
+                      (index) => PiwigoChip(
                     label: image.tags[index].name,
                     backgroundColor:
-                        Theme.of(context).chipTheme.backgroundColor,
+                    Theme.of(context).chipTheme.backgroundColor,
                     foregroundColor:
-                        Theme.of(context).textTheme.bodyMedium?.color,
+                    Theme.of(context).textTheme.bodyMedium?.color,
                   ),
                 ),
               ),

lib/views/image/edit_image_page.dart

@@ -12,7 +12,6 @@ import 'package:piwigo_ng/models/image_model.dart';
 import 'package:piwigo_ng/models/tag_model.dart';
 import 'package:piwigo_ng/network/api_error.dart';
 import 'package:piwigo_ng/network/images.dart';
-import 'package:piwigo_ng/services/preferences_service.dart';
 import 'package:piwigo_ng/utils/localizations.dart';
 import 'package:rounded_loading_button/rounded_loading_button.dart';