[GTInspector] Showing object state using a tree

The GTInspector now shows the state of an object in a tree view (screenshots below).

This tree view focuses on the internal structure of an object.

For example, when looking at a dictionary object you will see the "array" and the "tally" 

attributes and not the key value pairs. Those can be accessed from another presentation

of a dictionary object.

So the tree is meant to be used together with the finder and the other presentations of on object.

Let us know what you think.

Cheers,

Andrei & Doru