[lively-kernel] Issue #225: Inspector Receiver

[Marko Röder]

> The selected node does not become the receiver, it's just that you see a description of it in the bottom pane.
> The top-level node (the subject of the inspector) is still the receiver. To change that, there is a checkbox at the
> bottom (bind "this" to selection), which does what it says :)

Unfortunately this is only true for the GitHub-based Lively Kernel system (e.g. lively-web.org). The WebWerkstatt has a simpler inspector that automatically binds this to the selection.
Additionally, the tree on the GitHub-based system also has the missing root node which is the object that has been inspected originally. But there is a bug with "Bind 'this' to selection" when you select the root node: This is still bound to the last selection in the tree and you can only have "this" be the originally inspected object when you uncheck the "Bind 'this' to selection" box.

	- Marko