Please someone who know the code, double check this one.
It does look that translation for 2 options were missing.

- replace PHP4 style class constructor function names (based on
  class name) with php 5 __construct()
Also remove some '&' reference operators used with objects
And add some object type hints

This commit consists of patches automatically generated for this project on https://scrutinizer-ci.com

In an older version of PHP a file_exists() call would issue a warning
when the file did not exist. This was fixed in later PHP releases. Since
we require PHP 5.3 now, there's no need to supress any error here
anymore. This might even give a minor performance boost.

remove config option

Changed "Erweitertet" to "Erweitert" since the word "Erweitertet" does not exist, see: http://www.duden.de/suchen/dudenonline?s=erweitertet

Also, see leo.org translation for "advanced" to german: http://dict.leo.org/ende/index_de.html#/search=advanced&searchLoc=0&resultOrder=basic&multiwordShowSingle=on

uses the user interwiki link as profile link

our translation interface used to submit empty files for a while but no
longer does, so these can go