Schema update
Bugfix: PlaceObject, page="next"

When placing an object on the next page, the page type was broken
as we did not change the page number
Bugfix: PlaceObject page="next", grid

The grid was not set to the next page
Bugfix: PlaceObject/page="next" AtPageCreation

We now run the AtPageCreation of the given page, not of the 
current page.
Documentation + Schema update