optimize<CommitViewer>: use d=404 instead of d=mp to get avatar from gravatar.com

src/Resources/Icons.xaml

@@ -3,6 +3,7 @@
     <Geometry x:Key="Icon.Git">M1004.824 466.4L557.72 19.328c-25.728-25.76-67.488-25.76-93.28 0L360.568 123.2l78.176 78.176c12.544-5.984 26.56-9.376 41.376-9.376 53.024 0 96 42.976 96 96 0 14.816-3.36 28.864-9.376 41.376l127.968 127.968c12.544-5.984 26.56-9.376 41.376-9.376 53.024 0 96 42.976 96 96s-42.976 96-96 96-96-42.976-96-96c0-14.816 3.36-28.864 9.376-41.376L521.496 374.624a88.837 88.837 0 0 1-9.376 3.872v266.976c37.28 13.184 64 48.704 64 90.528 0 53.024-42.976 96-96 96s-96-42.976-96-96c0-41.792 26.72-77.344 64-90.528V378.496c-37.28-13.184-64-48.704-64-90.528 0-14.816 3.36-28.864 9.376-41.376l-78.176-78.176L19.416 464.288c-25.76 25.792-25.76 67.52 0 93.28l447.136 447.072c25.728 25.76 67.488 25.76 93.28 0l444.992-444.992c25.76-25.76 25.76-67.552 0-93.28z</Geometry>
     <Geometry x:Key="Icon.Submodule">M557.696 545.347L789.873 402.66c23.998-14.999 31.297-46.496 16.398-70.493-14.798-23.798-45.995-31.197-69.993-16.699L506.501 456.555 277.123 315.37c-24.098-14.798-55.595-7.3-70.493 16.799-14.799 24.097-7.3 55.594 16.798 70.493l231.778 142.586V819.12c0 28.297 22.897 51.195 51.195 51.195 28.297 0 51.195-22.898 51.195-51.195V545.347h0.1zM506.5 0l443.356 255.975v511.95L506.501 1023.9 63.144 767.925v-511.95L506.5 0z</Geometry>
     <Geometry x:Key="Icon.LFS">M169.984 470.016l0 84.010667 86.016 0 0-84.010667-86.016 0zM86.016 598.016l0-171.989333 852.010667 0 0 171.989333-852.010667 0zM256 297.984l0-84.010667-86.016 0 0 84.010667 86.016 0zM86.016 169.984l852.010667 0 0 171.989333-852.010667 0 0-171.989333zM169.984 726.016l0 84.010667 86.016 0 0-84.010667-86.016 0zM86.016 854.016l0-171.989333 852.010667 0 0 171.989333-852.010667 0z</Geometry>
+    <Geometry x:Key="Icon.User">M 841.758 299.375 c 0 165.25 -134 299.375 -299.375 299.375 S 243.009 464.75 243.009 299.375 S 377.009 0 542.383 0 c 165.25 0 299.375 134 299.375 299.375 Z m 0 0 M 789.383 612.75 c -69.75 55.125 -156.25 85.625 -247.125 85.625 c -91.875 0 -179.25 -31.25 -249.25 -87.375 C 108.384 678.875 25.8838 915.75 25.8838 1024 h 1027.75 c 0 -107.25 -83.125 -342.5 -264.25 -411.25 Z m 0 0</Geometry>
     
     <Geometry x:Key="Icon.ScrollLeft">M753.613 996.727L269.38 511.505 754.602 27.272z</Geometry>
     <Geometry x:Key="Icon.ScrollRight">M270.387 27.273L754.62 512.495 269.398 996.728z</Geometry>

src/UI/CommitViewer.xaml

@@ -36,12 +36,16 @@
                             <RowDefinition Height="Auto"/>
                             <RowDefinition Height="Auto"/>
                         </Grid.RowDefinitions>
-                        
+
                         <Grid.ColumnDefinitions>
                             <ColumnDefinition Width="96"/>
                             <ColumnDefinition Width="*"/>
                         </Grid.ColumnDefinitions>
 
+                        <Border Grid.Row="0" Grid.RowSpan="3" Grid.Column="0" Width="64" Height="64" HorizontalAlignment="Right" Background="Gray">
+                            <Path Style="{StaticResource Style.Icon}" Width="56" Height="56" Data="{StaticResource Icon.User}" VerticalAlignment="Bottom"/>
+                        </Border>
+
                         <Image Grid.Row="0" Grid.RowSpan="3" Grid.Column="0" Width="64" Height="64" x:Name="authorAvatar" HorizontalAlignment="Right"/>
 
                         <TextBlock Grid.Row="0" Grid.Column="1" Margin="15,0,0,0" Text="AUTHOR" Opacity=".6" Foreground="{StaticResource Brush.FG}"/>
@@ -65,6 +69,10 @@
                             <ColumnDefinition Width="*"/>
                         </Grid.ColumnDefinitions>
 
+                        <Border Grid.Row="0" Grid.RowSpan="3" Grid.Column="0" Width="64" Height="64" HorizontalAlignment="Right" Background="Gray">
+                            <Path Style="{StaticResource Style.Icon}" Width="56" Height="56" Data="{StaticResource Icon.User}" VerticalAlignment="Bottom"/>
+                        </Border>
+
                         <Image Grid.Row="0" Grid.RowSpan="3" Grid.Column="0" Width="64" Height="64" x:Name="committerAvatar" HorizontalAlignment="Right"/>
 
                         <TextBlock Grid.Row="0" Grid.Column="1" Margin="15,0,0,0" Text="COMMITTER" Opacity=".6" Foreground="{StaticResource Brush.FG}"/>

src/UI/CommitViewer.xaml.cs

@@ -148,7 +148,7 @@ namespace SourceGit.UI {
             if (File.Exists(filePath)) {
                 img.Source = new BitmapImage(new Uri(filePath));
             } else {
-                var bitmap = new BitmapImage(new Uri("https://www.gravatar.com/avatar/" + md5 + "?d=mp"));
+                var bitmap = new BitmapImage(new Uri("https://www.gravatar.com/avatar/" + md5 + "?d=404"));
                 if (save) {
                     bitmap.DownloadCompleted += (o, e) => {
                         var owner = o as BitmapImage;

src/UI/DiffViewer.xaml.cs

@@ -448,8 +448,6 @@ namespace SourceGit.UI {
             }
         }
 
-
-
         /// <summary>
         ///     Prevent default auto-scrolling when click row in DataGrid.
         /// </summary>