Always load default settings when deserializing SettingsRepository.

- VERBESSERT: Bei Updates werden neue eingebaute Stile jetzt immer berücksichtigt.

zaaReloaded2/Controller/SettingsRepository.cs

@@ -72,7 +72,9 @@ namespace zaaReloaded2.Controller
                 stream.Write(bytes, 0, bytes.Length);
                 stream.Position = 0;
                 SoapFormatter serializer = new SoapFormatter();
-                return serializer.Deserialize(stream) as SettingsRepository;
+                SettingsRepository repo = serializer.Deserialize(stream) as SettingsRepository;
+                repo.LoadDefaults();
+                return repo;
             }
         }
 
@@ -113,7 +115,7 @@ namespace zaaReloaded2.Controller
         public SettingsRepository()
         {
             SettingsList = new List<Settings>();
-            CreateDefault();
+            Reset();
         }
 
         #endregion
@@ -181,23 +183,46 @@ namespace zaaReloaded2.Controller
         /// Resets the Settings contained in this SettingsRepository
         /// to the default set of settings.
         /// </summary>
-        private void CreateDefault()
+        private void Reset()
         {
             SettingsList.Clear();
+            LoadDefaults();
+        }
 
+        /// <summary>
+        /// Loads default, built-in settings, replacing existing default
+        /// settings that might have been persisted.
+        /// </summary>
+        private void LoadDefaults()
+        {
             Assembly myAssembly = this.GetType().Assembly;
             SoapFormatter deserializer = new SoapFormatter();
             Stream stream = myAssembly.GetManifestResourceStream("zaaReloaded2.Defaults.ward.zaaReloaded");
             Settings settings = deserializer.Deserialize(stream) as Settings;
             settings.Name = Properties.Settings.Default.SettingsNameWard + BUILTIN_LABEL;
             settings.Uid = Guid.Parse(DEFAULT_SETTINGS_1_UID);
-            SettingsList.Add(settings);
+            ReplaceOrAdd(settings);
 
             stream = myAssembly.GetManifestResourceStream("zaaReloaded2.Defaults.clinic.zaaReloaded");
             settings = deserializer.Deserialize(stream) as Settings;
             settings.Name = Properties.Settings.Default.SettingsNameClinic + BUILTIN_LABEL;
             settings.Uid = Guid.Parse(DEFAULT_SETTINGS_2_UID);
-            SettingsList.Add(settings);
+            ReplaceOrAdd(settings);
+        }
+
+        private void ReplaceOrAdd(Settings settings)
+        {
+            Settings existing = SettingsList.FirstOrDefault(s => s.Uid == settings.Uid);
+            if (existing == null)
+            {
+                SettingsList.Add(settings);
+            }
+            else
+            {
+                int index = SettingsList.IndexOf(existing);
+                SettingsList.RemoveAt(index);
+                SettingsList.Insert(index, settings);
+            }
         }
 
         #endregion