using "none" for no refiner selection

config.py

@@ -144,7 +144,7 @@ def assemble_code(str_config):
     
     if str(config["use_safetensors"]).lower() == 'false': code['051_cpu_offload'] = "pipeline.enable_model_cpu_offload()"
     
-    if config['refiner'] != '':
+    if config['refiner'].lower() != 'none':
         code['052_refiner'] = f'''refiner = DiffusionPipeline.from_pretrained(
                 "{config['refiner']}",
                 text_encoder_2 = base.text_encoder_2,