Coach lineup polish, referee level/position delete, feature-flag nav gating, per-job pause

- Coach line-up screen: more breathing room above the sheet, brighter event
  subtitle, and the "Schedule" button now matches the date input's height.
- Positions and referee levels can now be deleted from Settings (blocked with
  a friendly message if still in use on a roster/referee profile/inheritance
  chain).
- The Evaluations nav placeholder is now gated on the formbuilder flag, same
  as Forms itself, since the design reuses formbuilder underneath.
- Control panel: each scheduled platform job can now be paused/resumed
  individually (features.models.JobToggle), independent of the platform-wide
  Maintenance lock.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

controlpanel/urls.py

@@ -43,6 +43,7 @@ urlpatterns = [
     path("admins/add/", views.PlatformAdminAddView.as_view(), name="admin_add"),
     path("admins/<uuid:pk>/update/", views.PlatformAdminUpdateView.as_view(), name="admin_update"),
     path("admins/<uuid:pk>/revoke/", views.PlatformAdminRevokeView.as_view(), name="admin_revoke"),
-    # Jobs (Celery Beat's scheduled platform jobs -- monitoring only, see controlpanel/services/jobs.py)
+    # Jobs (Celery Beat's scheduled platform jobs -- see controlpanel/services/jobs.py)
     path("jobs/", views.JobsView.as_view(), name="jobs"),
+    path("jobs/<str:name>/toggle/", views.JobToggleView.as_view(), name="job_toggle"),
 ]