message: Small fix for MiniTimer
diff: MaxHeight="44"
  Style="{StaticResource Toggl.Timer.DescriptionTextBox}"
  Visibility="{Binding IsRunning, Converter={StaticResource BooleanInvertToVisibilityConverter}}"
  - Text="{Binding Description}"/>
  + Text="{Binding Description, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
  </DockPanel>
  <Grid x:Name="durationPanel" x:FieldModifier="private"
  