follow prototype chain for objects with missing summaries, etc.

[csnover]

If there is a constructor, etc. and it has empty metadata summary/description, walk the prototype chain to try to find a parent object that has those filled out.

[wkeese]

cc @pruzand

[cjolif]

@damiengarbarino I think that's the one you face in the calendar... (on methods not constructors).

[damiengarbarino]

Does it also suppose to inherit documentation of overloaded properties (typical use case is changing the default value on a subclass)? Thanks, Damien