Logo configuration for *.wiktionary

The new Wiktionary tiles logo is optimized for a 128px width.

Some of the Wiktionary projects using the new logo, use a SVG file in the
configuration. This change takes care of these projects' logos.

A follow-up change will update PNG versions of other projects' logos to SVG.

Old logos ... http://upload.wikimedia.org/wikipedia/commons/thumb/....svg/135px-....svg.png
New logos ... http://upload.wikimedia.org/wikipedia/commons/thumb/....svg/128px-....svg.png

Change-Id: Ia8e258214eb684a1285f7a9cdb32e7b395d4c320