disabled name change

src/components/UserNameForm.js

@@ -75,7 +75,7 @@ class EmailForm extends React.Component {
       <Form onSubmit={this.onSubmit}>
         <FormItem {...usernameProps.fromItem}>
           {getFieldDecorator('username', { ...usernameProps.decorator })(
-            <Input {...usernameProps.input} disabled//>,
+            <Input {...usernameProps.input} />,
           )}
           {
             <div class="alert alert-warning" role="alert">改名已关闭。每年1月、4月、7月和10月的第一周开启改名。</div>