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

Removed extraneous whitespace to eliminate errors reported by the
Squiz.WhiteSpace.SuperfluousWhitespace sniff.

Fix violations for Squiz.Commenting.DocCommentAlignment.SpaceBeforeTag

Conflicts:
	inc/parser/xhtml.php

Remove trailing preposition.

Add a full stop between sentences for the allowdebug description.

Fix violations for Generic.PHP.LowerCaseConstant.Found

Change indentation to ensure code confirms to CodeSniffer rules.

This reverts commit 0d21c87f.

manager / Synchronize terms in de and de-informal

/ fix several typos / Fixes FS#2821

The refshow configuration option wasn't used as described anymore
already in the latest release and after the introduction of the media
usage index the parameter is also no longer relevant for internal
optimization. The only place where it was still used is the no longer
used search_references()-function which is removed here, too.

The refshow configuration option wasn't used as described anymore
already in the latest release and after the introduction of the media
usage index the parameter is also no longer relevant for internal
optimization. The only place where it was still used is the no longer
used search_references()-function which is removed here, too.