393 implement guestlog endpoints

Closes restful-api#393

javascript/src/iframe/viamapi-iframe.js

@@ -765,6 +765,48 @@ const connection = Penpal.connectToParent({
         });
       });
     },
+    registerWithPredefinedFields(
+      identity,
+      firstName,
+      lastName,
+      zipCode,
+      phone,
+      email
+    ) {
+      return new Penpal.Promise(result => {
+        viamApi.setIdentity(identity.authentication.publicKey);
+
+        executeRestfulFunction(
+          "public",
+          viamApi,
+          viamApi.identityRegisterWithPredefinedFields,
+          null,
+          firstName,
+          lastName,
+          zipCode,
+          phone,
+          email
+        ).then(executeResult => {
+          let sequence = Promise.resolve();
+          if (executeResult.code === "200") {
+            sequence = sequence.then(() => {
+              setIdentityInLocalStorage(window.currentlyLoadedIdentity);
+            });
+          }
+          sequence
+            .then(() => {
+              result(executeResult);
+            })
+            .catch(e => {
+              result({
+                data: "",
+                code: "400",
+                status: "Can not store identity: " + e
+              });
+            });
+        });
+      });
+    },
     submitRegisterClaims(
       identity,
       givennameArg,