Add missing meta_title and meta_description columns

Author: HansSchouten

migrations/2020_04_18_064412_create_page_translations_table.php

@@ -18,6 +18,8 @@ public function up()
             $table->unsignedInteger('page_id');
             $table->string('locale', 50);
             $table->string('title', 255);
+            $table->string('meta_title', 255);
+            $table->string('meta_description', 255);
             $table->string('route', 255);
             $table->timestamps();