Update Wikidata and WikimediaMessages

* Fixes display of wikibase entries in client watchlist (bug 62149)
* Handle exception in claim html generator
* Fix bot flag in merge items api module
* add i18n messages for WBREPONAME magic word (make it translatable),
  and for other projects section of sidebar in clients

See I4f81798 and I23a7521

Change-Id: Iad2ec389ae78705aa57dfc30f0f4bde9a9d6dbae