Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  508c74fe7ab4025f5849a0096366064f60df99c9

Fix {{#property:}} calls for missing data on wikis with LanguageConverter

It was producing a list of all variant codes, because output strings are
empty for each variant, and the converter doesn't handle empty strings as
conversion entries correctly, having raw conversion code (except for the
surrounding -{ }-) output (like "sr:;sr-ec:;sr-el:;") as is.

Change-Id: Iada5fbd8736753622af734e3494d0b3fa0109f68