[DNM] Testing new API gem
Merge branch 'master' into api

Conflicts:
	tests/browser/Gemfile.lock
Use new wikidata_api gem to create entities and remove sitelinks
Use new WikidataAPI gem everywhere and remove wikibase_api_module.rb
Update Gemfile.lock
Adressed @zeljkofilipin's comments
Don't use symbols as keys yet.
Fix handling of empty labels and descriptions when creating entities
Merge pull request #14 from wmde/api

Use mediawiki_api-wikidata gem for interaction with Wikidata API