old_contents: from django.apps import AppConfig
  from model_utils import Choices
  from django.utils.translation import ugettext as _
  
  
  class ShareConfig(AppConfig):
      name = 'share'
      link_type_choices = Choices(
          ('doi', _('DOI')),
          ('orcid', _('Orchid')),
          ('provider', _('Provider')),
          ('misc', _('Miscellaneous')),
      )
  
new_contents: from django.apps import AppConfig
  from model_utils import Choices
  from django.utils.translation import ugettext as _
  
  
  class ShareConfig(AppConfig):
      name = 'share'
      link_type_choices = Choices(
          ('doi', _('DOI')),
          ('provider', _('Provider')),
          ('misc', _('Miscellaneous')),
      )
  
subject: Remove orcid from link type - should be in personal identifier (#204)