Avoid BlankNodes inside PATCHes

The spec https://solidproject.org/TR/protocol#server-patch-n3-blank-nodes BlankNodes inside N3 PATCH entries, so let's use a NamedNode here?

Hopefully this can fix solid-contrib/pivot#31

Author: michielbdejong

src/trustedApplications/trustedApplications.utils.ts

@@ -36,7 +36,7 @@ export function getStatementsToAdd (
   person: NamedNode,
   ns: Namespaces
 ): any {
-  const application = new BlankNode(`bn_${nodeName}`)
+  const application = new NamedNode(nodeName)
   return [
     st(person, ns.acl('trustedApp'), application, person.doc()),
     st(application, ns.acl('origin'), origin, person.doc()),