Updated mediawiki/extensions
Project: mediawiki/extensions/Tabs  3ede2b6185c71c3763dac65c2d9af3b79a44dda6

Cleanup: fix i18n files, clean up whitespace.
Removed trailing whitespace from several files,
corrected mentioning of a tag in i18n files which
isn't used by the extension anymore, which was
removed even before version 1.0.

Change-Id: I18cca84be9dbfb52a471ef7b5cdb645028b17d51