Add a refresh method to entities

[jubianchi]

No description provided.

[jubianchi]

As I said before, this method is useful to hydrate entities wich are embedded but sent as summary. With this method, OREM will load the full entity from its URL retrieving all its properties.

[youknowriad]

In this case it's better to provide this method in the manager instead by passing the object, this will garantee it to work even if it's not a entity that extend the base Entity class. And it must check that the entity is in the store before making the refresh to avoid loading a new entity in the store outside of the standard workflow (find or persist).

[youknowriad]

close for now, may be not necessary