Replace portal title with entity name

Store a short entity name instead of the full home
heading so orgs can brand portals for sub-entities.
Restore hero i18n composition and keep the English
document title composed from the entity name.

Signed-off-by: Émile Ré <emile@probo.com>

pkg/iam/organization_service.go

@@ -614,7 +614,7 @@ func (s *OrganizationService) CreateOrganization(
 			TenantID:             organization.TenantID,
 			Active:               false,
 			Slug:                 slug.MakeWithEntropy(organization.Name),
-			Title:                "Compliance at " + organization.Name + ".",
+			EntityName:           organization.Name,
 			SearchEngineIndexing: coredata.SearchEngineIndexingNotIndexable,
 			MailingListID:        &mailingList.ID,
 			CreatedAt:            now,