put didInfo names in more places and add copy icons for DIDs & IDs

src/libs/endorserServer.ts

@@ -160,6 +160,10 @@ export function isHiddenDid(did: string) {
   return did === HIDDEN_DID;
 }
 
+export function isEmptyOrHiddenDid(did?: string) {
+  return !did || did === HIDDEN_DID; // catching empty string as well
+}
+
 /**
  * @return true for any nested string where func(input) === true
  *