ui: new contest edit page and form_checkbox

packages/ui-default/templates/partials/setting.html

@@ -69,7 +69,7 @@
     {% set _val = current[setting.key] %}
     {{ form.form_checkbox({
           label:setting.name,
-          help_text:setting.desc,
+          placeholder:setting.desc,
           name:setting.key,
           value:setting.value if (_val === undefined or _val === null) else _val,
           disabled:setting.flag|bitand(2)
@@ -78,7 +78,8 @@
           label:setting.name,
           name:'booleanKeys.' + setting.key,
           value:true,
-          extra_class:'display-hidden'
+          extra_class:'display-hidden',
+          no_label:true
     })}}
   {% endif %}
   {% endif %}