Add icon to the tabs

Author: donokuda

src/GitHub.VisualStudio/UI/Views/PullRequestCreationView.xaml

@@ -104,13 +104,17 @@
                         <ControlTemplate TargetType="{x:Type TabItem}">
                             <Border Name="Border" CornerRadius="2,2,0,0"
                                     Padding="10,3">
-                                <TextBlock
-                                    x:Name="ContentSite"
-                                    FontSize="12"
-                                    VerticalAlignment="Center"
-                                    HorizontalAlignment="Center"
-                                    Foreground="#ff333333"
-                                    Text="{TemplateBinding Header}" />
+                                <DockPanel>
+                                    <ui:OcticonImage Icon="info" Margin="0,0,5,0" />
+
+                                    <TextBlock
+                                        x:Name="ContentSite"
+                                        FontSize="12"
+                                        VerticalAlignment="Center"
+                                        HorizontalAlignment="Center"
+                                        Foreground="#ff333333"
+                                        Text="{TemplateBinding Header}" />
+                                </DockPanel>
                             </Border>
 
                             <ControlTemplate.Triggers>