add support extra URLs to createPosts()

[Robert Jäschke]

Currently, extra URLs for publications are added in a separate process using the updatePost() method with the parameter operation set to PostUpdateOperation.UPDATE_URLS_ADD. In addition to that method, we also want to support extra URLs in the createPosts() method. Please add support to that method.

[Robert Jäschke]

Clemens, I am sure you can implement this in a very short time.

[Daniel Zoller]

thank you, Clemens