title: Many-to-many relationship multiple drop-downs widget
body: <p>I am using Django1.9. I have a many-to-many relationship in my model between Person and Language. I want to find a way to select a language in html  widget(drop-down), and after selecting one language another drop-down should appear below, allowing selecting of one more language. One person can maximum have 8 languages. </p>
  
  <p>My questions is how to implement it in Django? Should I create a custom widget for such case? </p>
  
  <p>Thank you for any help.</p>