Enable button for change account name

Line 78 and 93

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">修改用户名后战绩会清零、也会失去绑定的云卡组。建议提前备份卡组。改名在7月7日23：59关闭。</div>
@@ -90,7 +90,7 @@ class EmailForm extends React.Component {
         </FormItem>
 
         <FormItem>
-          <SubmitButton disabled />
+          <SubmitButton />
         </FormItem>
       </Form>
     );