Comment fixes

Thanks for the issue and patch, and sorry it didn't get reviewed earlier -- I've been on vacation and hardly anyone else reviews documentation patches. :(

This needs some work though:

1. +++ b/core/modules/views/src/Plugin/views/field/FieldPluginBase.php
   @@ -87,7 +87,7 @@
      /**
       * @var array
   -   * Stores additional fields which get's added to the query.
   +   * Stores additional fields which get added to the query.
       * The generated aliases are stored in $aliases.
       */
      var $additional_fields = array();
   

   Let's actually fix the doc block. It should start with a one-line summary.

   Then a blank line

   Then it can have additional paragraphs of explanation.

   Then at the end, the @var line.

2. +++ b/core/modules/views/views.theme.inc
   @@ -547,8 +547,8 @@ function template_preprocess_views_view_table(&$variables) {
   +    // Remove columns if the option "hide empty column" is checked and the
   +    // field is empty.
        if (!empty($options['info'][$field]['empty_column'])) {
   

   Hm. It looks like the option is called "empty_column", not "hide empty column"?

Either way. :)

Better, thanks! Committed to 8.0.x and 8.1.x, with small grammar fix of which->that.