Fixed translations when rename cultures

I18N Commander/Processor/AppSettings.cs

@@ -268,6 +268,9 @@ public static class AppSettings
     
     public static async Task SetCultureCode(int index, string code)
     {
+        // Keep a copy of the previous name:
+        var previousCode = await AppSettings.GetCultureCode(index);
+        
         // Update the cache:
         CACHE_CULTURES[index] = code;
         
@@ -297,6 +300,13 @@ public static class AppSettings
             // Update the list of cultures indices:
             CACHE_CULTURES_INDICES.Add(index);
         }
+        
+        // Next, we need to rename the culture inside all translations as well:
+        var translations = await db.Translations.Where(n => n.Culture == previousCode).ToListAsync();
+        foreach (var translation in translations)
+            translation.Culture = code;
+        
+        await db.SaveChangesAsync();
     }
     
     #endregion