message: Remove span to regain explicit whitespace for country options
  This change restores whitespace between the country name and prefix code in the
  country dropdown.
diff: @@ -113,7 +113,7 @@ export default class CountryDropdown extends React.Component {
  const options = displayedCountries.map((country) => {
  return <div className="mx_CountryDropdown_option" key={country.iso2}>
  { this._flagImgForIso2(country.iso2) }
  - { country.name } <span>(+{ country.prefix })</span>
  + { country.name } (+{ country.prefix })
  </div>;
  });
  