Updated mediawiki/extensions
Project: mediawiki/extensions/ContentTranslation  29052e8ff5cbb6005d18c4157dfdd7d669ec258c

Style adjustments for the translation view

Small adjusmtnts of colour (highlighting and placeholder background),
layout (margin tweaks) and typography.

Change-Id: Ie98e22f34c82d8271f8992f24b13886097248177