improve linkages between variables and type definitions

[warren_scott]

Right now it is pretty easy (Thanks guys!!!) to go from a variable that is of a custom type, and find it in the types palette.

This is great, and it should just stay the way it is.

The problem comes when you have an array of type "FOO".  When you try to do this trick on the array of type FOO, it doesn't work.  Arrays of type "Foo" are common enough, and it would be great to be able to go directly to the type definition for the array element, something like this:

(I could see removing the "Types" selection right above the new element circled in red -- it has limited functionality even now).