inconsistencies in box setter methods

[Mike Wilson]

The contentBox method used as setter may apparently only set size, while marginBox will also set position. Though, reading the docs I am uncertain if this is on purpose:

DOES METHOD SUPPORT SETTING POSITION?
             impl     apidocs   dojocampus
contentBox    n          y          n
marginBox     y          y          n

Either way, the implementation and docs could do with some syncing ;-)

[James Burke]

(In [22363]) Refs #10728, update docs to mention that dojo.contentBox cannot set left and top \!strict

[James Burke]

I updated the API docs to be correct, but feel it is better not to mention top and left setting in the dojocampus docs.