Reorganize UI for exporters (#3025)

Co-authored-by: Richard Schreiber <schreiber@rami.io>

src/pretix/base/exporters/json.py

@@ -38,6 +38,7 @@ from decimal import Decimal
 from django.core.serializers.json import DjangoJSONEncoder
 from django.db.models import Prefetch
 from django.dispatch import receiver
+from django.utils.translation import gettext_lazy, pgettext_lazy
 
 from ..exporter import BaseExporter
 from ..models import ItemMetaValue, ItemVariation, ItemVariationMetaValue
@@ -47,6 +48,9 @@ from ..signals import register_data_exporters
 class JSONExporter(BaseExporter):
     identifier = 'json'
     verbose_name = 'Order data (JSON)'
+    category = pgettext_lazy('export_category', 'Order data')
+    description = gettext_lazy('Download a structured JSON representation of all orders. This might be useful for the '
+                               'import in third-party systems.')
 
     def render(self, form_data):
         jo = {