Updated mediawiki/extensions
Project: mediawiki/extensions/WikiLexicalData  f15f458c04b6bf57d5acb41d22d2168ff1dea44c

Some i18n
* Added 'Semantic annotations' and 'Lexical annotations' section
titles to the i18n file
* 'related to' now also translatable
* Removed 2 unused messages.

Change-Id: Ie084b16d1ac02178e69a9e73a556837037d70d98