feat(TrainingGroup): add excludeFromQuickDiaryCreate feature and update related logic

- Introduced a new boolean field `excludeFromQuickDiaryCreate` in the TrainingGroup model to control group visibility in quick diary creation.
- Updated the `updateTrainingGroup` service method to handle the new field, allowing for dynamic updates based on user input.
- Enhanced the TrainingTimesTab component to include a checkbox for excluding groups from quick diary creation, improving user interaction.
- Updated localization files to include new strings related to the exclude feature, ensuring clarity in multiple languages.
- Refactored logic in DiaryView and mobile app to consider the new exclusion criteria when suggesting training slots.

backend/services/trainingGroupService.js

@@ -159,9 +159,11 @@ class TrainingGroupService {
         return group;
     }
 
-    async updateTrainingGroup(userToken, clubId, groupId, name, sortOrder) {
+    async updateTrainingGroup(userToken, clubId, groupId, body = {}) {
         await checkAccess(userToken, clubId);
-        
+
+        const { name, sortOrder, excludeFromQuickDiaryCreate } = body;
+
         const group = await TrainingGroup.findOne({
             where: { id: groupId, clubId },
         });
@@ -169,25 +171,31 @@ class TrainingGroupService {
             throw new HttpError('Gruppe nicht gefunden', 404);
         }
 
-        // Preset-Gruppen können nicht umbenannt werden
-        if (group.isPreset && name !== group.name) {
-            throw new HttpError('Vorgaben-Gruppen können nicht umbenannt werden', 400);
-        }
-
-        // Prüfe, ob bereits eine andere Gruppe mit diesem Namen existiert
-        if (name !== group.name) {
-            const existing = await TrainingGroup.findOne({
-                where: { clubId, name, id: { [Op.ne]: groupId } },
-            });
-            if (existing) {
-                throw new HttpError('Eine Gruppe mit diesem Namen existiert bereits', 409);
+        if (name !== undefined && name !== null) {
+            // Preset-Gruppen können nicht umbenannt werden
+            if (group.isPreset && name !== group.name) {
+                throw new HttpError('Vorgaben-Gruppen können nicht umbenannt werden', 400);
             }
+
+            if (name !== group.name) {
+                const existing = await TrainingGroup.findOne({
+                    where: { clubId, name, id: { [Op.ne]: groupId } },
+                });
+                if (existing) {
+                    throw new HttpError('Eine Gruppe mit diesem Namen existiert bereits', 409);
+                }
+            }
+            group.name = name;
         }
 
-        group.name = name;
-        if (sortOrder !== undefined) {
+        if (sortOrder !== undefined && sortOrder !== null) {
             group.sortOrder = sortOrder;
         }
+
+        if (excludeFromQuickDiaryCreate !== undefined) {
+            group.excludeFromQuickDiaryCreate = Boolean(excludeFromQuickDiaryCreate);
+        }
+
         await group.save();
         return group;
     }