message: Signup view improvements (win)
  Vertically center the country name
  Add some text search capabilities to combobox
  Add margin to the TOS checkbox
diff: <TextBlock Name="countryLabel" Text="Select Country:" Margin="0,10" Visibility="Collapsed"/>
  <ComboBox Name="countrySelect" Height="30"
  - IsEditable="True" Visibility="Collapsed"
  + Visibility="Collapsed"
  SelectionChanged="countrySelect_SelectionChanged"
  - ItemsSource="{Binding}"
  SelectedValuePath="Name"
  - VerticalAlignment="Center">
  - <ComboBox.ItemTemplate>
  - <DataTemplate>
  - <TextBlock Foreground="#000000" Text="{Binding Name}" />
  - </DataTemplate>
  - </ComboBox.ItemTemplate>
  + VerticalAlignment="Center"
  + VerticalContentAlignment="Center"
  + DisplayMemberPath="Name"
  + Foreground="#000000"
  + IsTextSearchEnabled="True"
  + IsTextSearchCaseSensitive="False">
  </ComboBox>
  - <CheckBox Name="tosCheckbox" Foreground="#ffffff" Visibility="Collapsed">
  + <CheckBox Name="tosCheckbox" Foreground="#ffffff" Visibility="Collapsed" Margin="0,10,0,5">
  <WrapPanel>
  <TextBlock Foreground="White" Name="TextBlockWithHyperlink" Margin="10,0,0,0">
  I agree to
  