Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  b46b731fde3f4b6da5f39dc9baf75509c8127156

(bug 43998) initial implementation of property parser hook

- tests for this in a followup patchset
- todo: support more property types, value formatters, qualifiers, etc.

Change-Id: I1cbe83a00d18213b911588a797da0f3240afd9ae