working html for survey + fixed json error + added specific diet text field

apps/wei/models.py

@@ -232,6 +232,12 @@ class WEIRegistration(models.Model):
         verbose_name=_("health issues"),
     )
 
+    specific_diet = models.TextField(
+        blank=True,
+        default="",
+        verbose_name=_("specific diet"),
+    )
+
     emergency_contact_name = models.CharField(
         max_length=255,
         verbose_name=_("emergency contact name"),