Disable the multilingual, rosetta stone columns on lesson columns.

We'd need 3D for this, or way too much javascript.

user/plugins/m3-p2/m3-p2.php

@@ -209,6 +209,7 @@ class M3P2Plugin extends Plugin
         }
 
         $this->grav['twig']->twig()->addGlobal('target_page', $target_page);
+        $this->grav['twig']->twig()->addGlobal('disable_multilingual', true);
 
         $page = new Page;
         $page->init(new \SplFileInfo(__DIR__ . '/pages/polyglot-columns.md'));
@@ -287,6 +288,7 @@ class M3P2Plugin extends Plugin
         }
 
         $this->grav['twig']->twig()->addGlobal('target_pages', $target_pages);
+        $this->grav['twig']->twig()->addGlobal('disable_multilingual', true);
 
         $page = new Page;
         $page->init(new \SplFileInfo(__DIR__ . '/pages/lesson-columns.md'));

user/themes/textbook/templates/partials/language-selector.html.twig

@@ -53,7 +53,7 @@
 {% endfor %}
 
 {% block polyglot_language_selector %}
-  {% if uri.paths and uri.paths(0) != "polyglot-columns" %}
+  {% if uri.paths and not disable_multilingual %}
   <li>
     <a href="{{ '/polyglot-columns' ~ uri.path }}">
       {% if language_display.select == 'default' or language_display.select == 'flag' %}