DatePicker now respects HorizontalContentAlignment (#1577)

Author: Keboo

MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.DatePicker.xaml

@@ -373,7 +373,8 @@
                                            Padding="0,0,8,0"
                                            VerticalContentAlignment="Center"
                                            Style="{DynamicResource MaterialDesignDatePickerTextBox}"
-                                           HorizontalAlignment="Stretch" 
+                                           HorizontalAlignment="Stretch"
+                                           HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
                                            wpf:HintAssist.IsFloating="{Binding Path=(wpf:HintAssist.IsFloating), RelativeSource={RelativeSource TemplatedParent}}"
                                            wpf:HintAssist.FloatingScale="{Binding Path=(wpf:HintAssist.FloatingScale), RelativeSource={RelativeSource TemplatedParent}}"
                                            wpf:HintAssist.FloatingOffset="{Binding Path=(wpf:HintAssist.FloatingOffset), RelativeSource={RelativeSource TemplatedParent}}"