Include expanded css properties when looking at rules.
Include computed style with the getNodeStyle() request.
A bunch of hacking toward a remotable computed view.

This isn't really working out, but there's more here that I want to
keep than throw away, so I'm keeping it around for the moment.
Use actor in the actor-helpers api rather than server.
Use a different handler name for custom request handlers.
Merge LongString and LongStringActor into one object.

I don't think the implementation/actor split is helping much, so I'm
starting to move to a single impl/actor implementation, with
LongString as a baby step.
Merge style-related actors with their impls.
Merge DOMRef and DOMNodeActor
Merge the DOMWalker and DOMWalkerActor objects.
Add a Remotable.manageActors() method.

Not sure how much I like it so far, but we'll give it a try.
Use a common loader for the devtools.
Fix the managed actor map, remove some debug spew.
Split out Actor and OwnerActor base classes, using sdk/heritage.
And add a Front base class.
Rename some objects for a bit of consistency.
Rework manageActors a bit, added a mirror manageFronts.
Add a bit of magic to make actor types a bit cleaner and easier.
More type simplification.