class Question(models.Model):
    quest = models.CharField("Question",core=True, default="", maxlength="500")
    type_quest = models.CharField("Type",maxlength=200, choices=TYPE, default = 'One')
    test = models.ForeignKey(Test, edit_inline=models.TABULAR) # ПОЛЕ ОБЯЗАТЕЛЬНО ДОЛЖНО БЫТЬ ЗАПОЛНЕНО

    class Admin():
        fields = (
            ('Questions:', {'fields': ('quest','type_quest',)}), # ОБЯЗАТЕЛЬНОГО ПОЛЯ test НЕТ :)
        )
        list_display = ('quest','type_quest','test')