message: Fix 1px jump when hovering over login/signup button (win)
diff: </WrapPanel>
  </CheckBox>
  - <Grid Margin="0 20 0 0" Height="32" Width="200">
  - <Border Background="{DynamicResource Toggl.SecondaryAccentBrush}"
  + <Grid Margin="0 20 0 0">
  + <Border Height="32" Width="200"
  + Background="{DynamicResource Toggl.SecondaryAccentBrush}"
  Visibility="{Binding IsLoading, Converter={StaticResource BooleanToVisibilityConverter}}">
  <Image Source="/TogglDesktop;component/Resources/login-spinner.png"
  Name="confirmButtonSpinner" x:FieldModifier="private"
  </Image.LayoutTransform>
  </Image>
  </Border>
  - <Button Style="{StaticResource Toggl.SecondaryAccentButton}"
  + <Button Height="32" Width="200"
  + Style="{StaticResource Toggl.SecondaryAccentButton}"
  Command="{Binding ConfirmLoginSignupCommand}"
  Content="{Binding ConfirmButtonText}"
  Visibility="{Binding IsViewEnabled, Converter={StaticResource BooleanToVisibilityConverter}}"/>
  