title: Make django admin to display no more than 100 characters in list results
body: <p>I am using Django admin for my site and I would like to make a customization on how a field is displayed on the list_display page for one of my models.</p>
  
  <p>One of my models has a <code>TextField</code> that can be 300 characters</p>
  
  <p>When the model is listed in the Django admin, I would like to limit the length of the text displayed in the Admin list display to 100 characters.</p>
  
  <p>Is there a way to do this within the Django Admin class?</p>
  
  <p>admin.py:</p>
  
  <pre><code>class ApplicationAdmin(admin.ModelAdmin):
      model = Application
      list_display = [ "title1", "title2"]
  </code></pre>
  
  <p>models.py: </p>
  
  <pre><code>class Application(models.Model):
      title1 = models.TextField(max_length=300)
      title2 = models.TextField(max_length=300)
  </code></pre>