Merge branch 'clean-javascript-vendor-files' into 'master'

app/assets/javascripts/application.js

...javascripts/cycle_analytics/cycle_analytics_bundle.js.es6

...vascripts/environments/components/environment_item.js.es6

app/assets/javascripts/lib/utils/datetime_utility.js.es6

app/assets/javascripts/merge_request_tabs.js.es6

package.json

spec/javascripts/environments/environment_item_spec.js.es6

spec/javascripts/test_bundle.js

vendor/assets/javascripts/timeago.js

vendor/assets/javascripts/vue-resource.full.js

vendor/assets/javascripts/vue-resource.js.erb

vendor/assets/javascripts/vue-resource.min.js

vendor/assets/javascripts/vue.full.js

vendor/assets/javascripts/vue.js.erb

vendor/assets/javascripts/vue.min.js