feat: translation flows, revision conflicts, delete scopes, article moves and a target site for new articles

api/pkg/apperr/messages.go

@@ -63,6 +63,7 @@ const CachePurgeTargetErrorMessage = "A variant name or an image id is required
 const VariantUnknownMessage = "Unknown variant"
 const VariantUnsupportedParameterMessage = "Unsupported parameter"
 const SiteNotFoundErrorMessage = "site_not_found"
+const InvalidSiteKeyErrorMessage = "invalid_site_key"
 const SiteKeyTakenErrorMessage = "site_key_taken"
 const SiteHasArticlesErrorMessage = "site_has_articles"
 const DefaultSiteErrorMessage = "default_site"