DIALOG_SHIM::Show() and finishDialogSettings() both
call SetSizeHints(), which computes the best size from
the full unconstrained scrolled content area. This
inflated the dialog to unusable heights.
Move size correction logic into the base class by
overriding Show() to cap minimum height at 500px and
resetting to m_initialSize after finishDialogSettings().
Remove the duplicate size fixups from the derived DRC
editor's TransferDataToWindow(). Increase default
initial height from 680 to 800.
Seth Hillbrand
d7460bc5fe