add info boxes to dashboard and hubspot settings if sync problems exist

src/pretix/control/templates/pretixcontrol/event/index.html

@@ -79,6 +79,15 @@
                     class="btn btn-primary">{% trans "Show affected orders" %}</a>
         </div>
     {% endif %}
+    {% if has_sync_problems %}
+        <div class="alert alert-warning">
+            {% blocktrans trimmed %}
+                Orders in this event could not be <strong>synced to an external system</strong> as configured.
+            {% endblocktrans %}
+            <a href="{% url "control:event.datasync.failedjobs" event=request.event.slug organizer=request.event.organizer.slug %}"
+                    class="btn btn-primary">{% trans "Show sync problems" %}</a>
+        </div>
+    {% endif %}
     {% eventsignal request.event "pretix.control.signals.event_dashboard_top" request=request %}
 
     {% if request.event.has_subevents %}

src/pretix/control/views/dashboards.py

@@ -383,6 +383,10 @@ def event_index(request, organizer, event):
     ctx['has_cancellation_requests'] = can_view_orders and CancellationRequest.objects.filter(
         order__event=request.event
     ).exists()
+    ctx['has_sync_problems'] = can_change_event_settings and request.event.queued_sync_jobs.filter(
+        Q(need_manual_retry__isnull=False)
+        | Q(failed_attempts__gt=0)
+    ).exists()
 
     ctx['timeline'] = [
         {

src/pretix/control/views/datasync.py

@@ -36,7 +36,8 @@ from pretix.base.datasync.datasync import sync_targets
 from pretix.base.models import Event, Order
 from pretix.base.models.datasync import OrderSyncQueue
 from pretix.control.permissions import (
-    AdministratorPermissionRequiredMixin, OrganizerPermissionRequiredMixin, EventPermissionRequiredMixin,
+    AdministratorPermissionRequiredMixin, EventPermissionRequiredMixin,
+    OrganizerPermissionRequiredMixin,
 )
 from pretix.control.signals import order_info
 from pretix.control.views.orders import OrderView
@@ -97,7 +98,7 @@ class FailedSyncJobsView(ListView):
     template_name = 'pretixcontrol/datasync/failed_jobs.html'
     model = OrderSyncQueue
     context_object_name = 'queue_items'
-    paginate_by = 20
+    paginate_by = 100
     ordering = ('triggered',)
 
     def get_queryset(self):