old_contents: from django.db import models
  from .unit import Unit
  
  SECTION_TYPES = (
      (1, 'PHONE_OR_EMAIL'),
      (2, 'LINK'),
      (3, 'TOPICAL'),
      (4, 'OTHER_INFO'),
      (5, 'OPENING_HOURS'),
      (6, 'SOCIAL_MEDIA_LINK'),
      (7, 'OTHER_ADDRESS'),
  )
  
  
  class UnitConnection(models.Model):
      unit = models.ForeignKey(Unit, db_index=True, related_name='connections')
      name = models.CharField(max_length=400)
      www = models.URLField(null=True, max_length=400)
      section_type = models.PositiveSmallIntegerField(choices=SECTION_TYPES, null=True)
      email = models.EmailField(max_length=100, null=True)
      phone = models.CharField(max_length=50, null=True)
      contact_person = models.CharField(max_length=80, null=True)
      order = models.PositiveSmallIntegerField(default=0)
  
      class Meta:
          ordering = ['order']
new_contents: from django.db import models
  from .unit import Unit
  
  SECTION_TYPES = (
      (1, 'PHONE_OR_EMAIL'),
      (2, 'LINK'),
      (3, 'TOPICAL'),
      (4, 'OTHER_INFO'),
      (5, 'OPENING_HOURS'),
      (6, 'SOCIAL_MEDIA_LINK'),
      (7, 'OTHER_ADDRESS'),
      (8, 'HIGHLIGHT'),
  )
  
  
  class UnitConnection(models.Model):
      unit = models.ForeignKey(Unit, db_index=True, related_name='connections')
      name = models.CharField(max_length=400)
      www = models.URLField(null=True, max_length=400)
      section_type = models.PositiveSmallIntegerField(choices=SECTION_TYPES, null=True)
      email = models.EmailField(max_length=100, null=True)
      phone = models.CharField(max_length=50, null=True)
      contact_person = models.CharField(max_length=80, null=True)
      order = models.PositiveSmallIntegerField(default=0)
  
      class Meta:
          ordering = ['order']
  
subject: Add missing connection section type value HIGHLIGHT