Tests run fine with Vector skin installed. Full output at P14679.
~/Documents/gerrit/mediawiki/core$ npm run selenium-test ... Spec Files: 6 passed, 6 total (100% completed) in 00:01:36
Half of the specs fail when Vector skin is not installed. Full output at P14680.
~/Documents/gerrit/mediawiki/core$ npm run selenium-test ... Spec Files: 3 passed, 3 failed, 6 total (100% completed) in 00:07:55