title: Add button not showing in Django admin
body: <p>I am trying to add the related objects from django tutorial of it's documentation <a href="https://docs.djangoproject.com/en/1.11/intro/tutorial07" rel="nofollow noreferrer">https://docs.djangoproject.com/en/1.11/intro/tutorial07</a></p>
  
  <p>But there is no add button showing in it</p>
  
  <p>I've checked this answer too but it did not help <a href="https://stackoverflow.com/questions/27701147/add-button-not-showing-up-in-django-tutorial-02">Add button not showing up in Django tutorial 02</a></p>
  
  <p>This is my admin.py</p>
  
  <pre><code>   from __future__ import unicode_literals
  
     from django.contrib import admin
     from home.models import *
  
     # Register your models here.
  
     class ChoiceInline(admin.StackedInline):
         model = Choice
         extra = 3
     class QuestionAdmin(admin.ModelAdmin):
         fieldsets = [
                      (None,{'fields': ['question_text']}),
                      ('Date information', {'fields': ['pub_date'], 'classes': ['collapse']}),
                     ]
         inlines = [ChoiceInline]
  
     admin.site.register(Question, QuestionAdmin)
  </code></pre>
  
  <p>This is my models.py</p>
  
  <pre><code>    from __future__ import unicode_literals
  
      from django.db import models
  
  
      # Create your models here.
      class Question(models.Model):
          question_text = models.CharField(max_length=200)
          pub_date = models.DateTimeField('date published')
  
  
      class Choice(models.Model):
          question = models.ForeignKey(Question, on_delete=models.CASCADE)
          choice_text = models.CharField(max_length=200)
          votes = models.IntegerField(default=0)
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/YB1dg.png" rel="nofollow noreferrer">This is showing in my admin page</a></p>
  
  <p>python used is python 2.7</p>