Frederic Petit

simgear::canvas::GridLayout::doLayout: respect offset passed in the geom parameter to fix grid layouts being rendered on top of other things

canvas.WidgetsFactoryDialog: Add layout testing tab including grid layout

canvas.gui.widgets.ComboBox: Fix error when calling setSelectedByValue on an empty combo box

canvas.Window: Only draw window decoration when the window's type is "window" or "dialog"

canvas.gui.widgets.PropertyComboBox: Fix wrong parent method name

canvas.gui.widgets.PropertyWidget.del: Check if non-propertybound widget parent has a del method, if so, call it.

Convert multiplayer pilot list to Canvas

canvas.gui.Widget: Add expanding functionality.