feat: publisher, local business and home crumb settings

- Publisher and Local business tabs with the C20 refusals (sameAs lines,
  person as local business, address, times, country, coordinates)
- the publisher node from the settings, as an Organization, a Person or
  the chosen local business type with address, geo and opening hours
- P8 publisher preview with Google's required and recommended findings
  (classes/schema Validate)
- the home crumb name on the General tab; every new key in the settings
  API and seo_update_settings

classes/schema/graph.go

@@ -53,13 +53,6 @@ const (
 	PublisherPerson       = "person"
 )
 
-// LocalTypes are the LocalBusiness types the settings offer (UI-SPEC C20).
-var LocalTypes = []string{
-	"LocalBusiness", "ProfessionalService", "Store", "FoodEstablishment",
-	"HealthAndBeautyBusiness", "MedicalBusiness", "LegalService",
-	"HomeAndConstructionBusiness", "AutomotiveBusiness", "FinancialService",
-}
-
 // Crumb is one breadcrumb: its name, absolute URL and site path.
 type Crumb struct {
 	Name string `json:"name"`