Adjusted email headers in contact form

See yiisoft/yii2-app-advanced#426

Author: samdark

config/params.php

@@ -2,4 +2,6 @@
 
 return [
  'adminEmail' => 'admin@example.com',
+ 'senderEmail' => 'noreply@example.com',
+ 'senderName' => 'Example.com mailer',
 ];

models/ContactForm.php

@@ -52,7 +52,8 @@ public function contact($email)
  if ($this->validate()) {
  Yii::$app->mailer->compose()
  ->setTo($email)
- ->setFrom([$this->email => $this->name])
+ ->setFrom([Yii::$app->params['senderEmail'] => Yii::$app->params['senderName']])
+ ->setReplyTo([$this->email => $this->name])
  ->setSubject($this->subject)
  ->setTextBody($this->body)
  ->send();