Revision 816

(ProjFrame.__init__): Rearrange the
        order that the controls are created so that tabbing works correctly.
(ProjFrame.OnApply): Renamed from _OnTry() to use wxDialog behaviour.
(ProjFrame.OnOK): Renamed from _OnOK() to use wxDialog behaviour.
(ProjFrame.OnCancel): Renamed from _OnClose() to use wxDialog behaviour.        (ProjPanel.__init__): Add "Airy" to the list of ellipsoids so we
        can provide the "UK National Grid" as a default projection.
(UTMPanel.__init__): Rearrange the order that the controls are
        created so that tabbing works correctly.