function buildNavType (type, typeLink) {
  return [
    '<span class="nav-item-type type-' + type + '">',
    type[0].toUpperCase(),
    '</span>',

    '<span class="nav-item-name">',
    typeLink,
    '</span>'
  ].join('')
}
Helper for generating generic navigation wrapper around content passed for
methods, and types.

@param {String} itemContent navigation item content
@return {String}