fixes

src/project/models.py

@@ -111,6 +111,7 @@ class SliderItem(CMSPlugin):
     qualifications = models.ManyToManyField(SliderItemQualification, verbose_name='Qualifikationen', blank=True,
                                             null=True)
     email = models.EmailField(verbose_name='E-Mail', blank=True, null=True)
+    next_slide_text = models.CharField(verbose_name='Nächster Slide Text', max_length=255, blank=True, null=True)
 
     class Meta(CMSPlugin.Meta):
         verbose_name = 'Slider Item'