Add confirmation dialogue when saving and update saving process to be up to date with API

src/RollABall/Assets/Scripts/RenderSettings/src/persistence/saving/JsonRenderSettingUnityPackageSaver.cs

@@ -69,7 +69,9 @@ public class JsonRenderSettingUnityPackageSaver : IFileRenderSettingSaver
     {
         //Path of blueprint relative to preset root
 
-        PrefabUtility.CreatePrefab(presetsRoot + preset.GetName() + "/VisualBlueprints/" + blueprint.GetName() + ".prefab", blueprint.GetBlueprintObject());
+        var prefab = (GameObject)PrefabUtility.InstantiatePrefab(blueprint.GetBlueprintObject());
+        PrefabUtility.SaveAsPrefabAsset(prefab, presetsRoot + preset.GetName() + "/VisualBlueprints/" + blueprint.GetName() + ".prefab");
+        GameObject.DestroyImmediate(prefab);
 
         return "VisualBlueprints/" + blueprint.GetName() + ".prefab";
     }

src/RollABall/Assets/Scripts/RenderSettings/src/rendersettings/view/RenderSettingPanel.cs

@@ -114,7 +114,11 @@ public class RenderSettingPanel : IObserver<IRenderSetting>
 
         if (GUILayout.Button("Save", GUILayout.Width(50)))
         {
-            settingsSaver.Save(preset, "Assets/RenderStyles/");
+            if (EditorUtility.DisplayDialog("Save preset",
+           "Are you sure you want to save preset " + preset.GetName() + "?", "Save", "Cancel"))
+            {
+                settingsSaver.Save(preset, "Assets/RenderStyles/");
+            }
         }
 
         if (GUILayout.Button("Close", GUILayout.Width(100)))

src/RollABall/Assets/Scripts/RenderSettings/src/visualblueprints/view/VisualBlueprintPanel.cs

@@ -52,7 +52,7 @@ public class VisualBlueprintPanel
     private void RemoveVisualBlueprint(IVisualBlueprint blueprint)
     {
         if (EditorUtility.DisplayDialog("Remove blueprint?",
-           "Are you sure you want to remove blueprint" + blueprint.GetName() + "?", "Remove", "Cancel"))
+           "Are you sure you want to remove blueprint " + blueprint.GetName() + "?", "Remove", "Cancel"))
         {
             this.preset.RemoveVisualBlueprint(blueprint);
         }