Create Item Smoke Test

Bug 68094
Create smoke test for Property

Bug: 71516
Moved tags
Make URL to smoke item configurable
Merge pull request #11 from wmde/item_smoke

Create Item Smoke Test
Merge branch 'master' into property_smoke

Conflicts:
	tests/browser/features/item_smoke.feature
	tests/browser/features/step_definitions/entity_steps.rb
Merge pull request #13 from wmde/property_smoke

Property smoke
Load config file only if file exists
Show error and abort when no config file is found
Add @firefox tags as required by WMF CI

See:
https://www.mediawiki.org/wiki/Manual:Coding_conventions/Selenium#Required_tags
Add WB_REPO_USERNAME to CI settings
Add missing @firefox tag
Remove unused method
Remove unused settings from config files
Update Gemfile.lock
Merge branch 'master' into api

Conflicts:
	tests/browser/Gemfile.lock
Use new wikidata_api gem to create entities and remove sitelinks