Simplify VDB Editor Layout

VDB Editor is currently complex and contains 2 sets of always-visible tabs. The lower, except for the Description, could be termed "advanced" options.

2 Options

• Create a second Editor tab labeled "Advanced" and label the main tab "Contents"
  • Could even give a "tree view" of the contents as well as Models, Other Files, and UDF Jars..?

or

• Change the bottom tab to a collapsible area which is activated with an "Advanced Settings...." link, similar to a number of dialogs.