Remove Google Analytics, move to Soil

[retlehs]

it's time to move the GA snippet from html5 boilerplate to soil

lib/config.php

if (!defined('GOOGLE_ANALYTICS_ID')) {
  // Format: UA-XXXXX-Y (Note: Universal Analytics only)
  define('GOOGLE_ANALYTICS_ID', '');
}

---

lib/assets.php

/**
 * Google Analytics snippet from HTML5 Boilerplate
 *
 * Cookie domain is 'auto' configured. See: http://goo.gl/VUCHKM
 */
function google_analytics() {
  ?>
  <script>
    <?php if (WP_ENV === 'production' && !current_user_can('manage_options')) : ?>
      (function(b,o,i,l,e,r){b.GoogleAnalyticsObject=l;b[l]||(b[l]=
      function(){(b[l].q=b[l].q||[]).push(arguments)});b[l].l=+new Date;
      e=o.createElement(i);r=o.getElementsByTagName(i)[0];
      e.src='//www.google-analytics.com/analytics.js';
      r.parentNode.insertBefore(e,r)}(window,document,'script','ga'));
    <?php else : ?>
      function ga() {
        if (window.console) {
          console.log('Google Analytics: ' + [].slice.call(arguments));
        }
      }
    <?php endif; ?>
    ga('create','<?= GOOGLE_ANALYTICS_ID; ?>','auto');ga('send','pageview');
  </script>
  <?php
}
if (GOOGLE_ANALYTICS_ID) {
  add_action('wp_footer', __NAMESPACE__ . '\\google_analytics', 20);
}

[retlehs]

closed by #1382 and roots/soil#56