* Use single list for component library draw item and fields to simplify
component library object.
* Add field manipulation helper methods to component library object.
* Make component library draw item edit dialog sizable.
* Created new component library editor draw item dialog box with
wxFormBuilder.
* Removed previous DialogBlocks version of the draw item dialog box.
* Removed some additional global variables used in component library
editor.
* Add IsFillable() method to draw item base object.