in file list_admin_class.php
add this line
before class declaration
and rename lan file from English_admin_list_new.php to English_admin.php
I tried almost each possible combination based on documentation, only this worked.
PS. I dislike to use folders for language files together with language name in file name.
New version of metatag plugin is tested now here... some messages can be see from time to time :)
There is new theme mdbootstrap in my github repository for anybody who want to learn new way how to build e107 theme. It's built with focusing on step by step. Anybody who have interest, just let know about you and start ask questions while I am on the beginning.
For download something, you need to subscribe class Real e107 user in your profile. (if you didn't get message on homepage)