Enable moving news/blog posts between spaces

The location of pages can be changed, in the hierarchy within the same space as well as between spaces.

It would come in handy sometimes to be able to move news/blog posts between spaces, too. The current workaround is to copy&paste the whole entry, then create a new one in the destination space, paste the source, save it, and delete the old post.

This not only breaks internal and external (tiny) links, it's also cumbersome to use, and destroys history.