updated ui

updated ui to have placeholders, certain sliders appear only when needed, step 2b is hidden if pitch guidance is disabled, unnecessary radios replaced with checkboxes

Author: alexlnkp

infer-web.py

@@ -2399,15 +2399,15 @@ def whethercrepeornah(radio):
                 gr.Markdown(value=i18n("step3: 填写训练设置, 开始训练模型和索引"))
                 with gr.Row():
                     save_epoch10 = gr.Slider(
-                        minimum=0,
+                        minimum=1,
                         maximum=50,
                         step=1,
                         label=i18n("保存频率save_every_epoch"),
                         value=5,
                         interactive=True,
                     )
                     total_epoch11 = gr.Slider(
-                        minimum=0,
+                        minimum=1,
                         maximum=10000,
                         step=1,
                         label=i18n("总训练轮数total_epoch"),