Redesign of all the file dialogs in the GUI.
All file dialogs are now instances of gui.filedialog.RelaxFileDialog. This fixes many inconsistencies throughout the GUI, includes presenting an wx.FD_OPEN style file dialog when a wx.FD_SAVE style should have been shown.
Authored by: bugman 2011-07-29
Parent: [r13988]
Child: [r13990]