title: Change zinnia app name to Blog Django admin
body: <p><img src="https://i.stack.imgur.com/TFlEn.png" alt="enter image description here"></p>
  
  <p>I am using zinnia to create a blog application in my website using django(1.6.5). But as in image my app name is showing as "Zinnia" in the django admin page which i would like to change as "Blog". Could some one explain me how i could do this</p>