#233 Closing the GUI builder exits Boa Constructor

[David A. Mellis]

If I click the GUI Builder close window title bar
button, Boa Constructor exits. This is non-standard
and confusing. It should simply close the GUI Builder
window without exiting the entire program.

Boa Constructor 0.4 on Mac OS X, with wxPython 2.5.4.1.

[David A. Mellis]

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That is, closing the Palette window exits Boa Constructor.