Adding react-intl i18n to the frontend. No translations yet

...javascripts/components/features/getting_started/index.jsx

...s/javascripts/components/features/home_timeline/index.jsx

...vascripts/components/features/mentions_timeline/index.jsx

...javascripts/components/features/public_timeline/index.jsx

app/assets/javascripts/components/features/reblogs/index.jsx

...ipts/components/features/status/components/action_bar.jsx

...components/features/status/components/detailed_status.jsx

...avascripts/components/features/ui/components/tabs_bar.jsx

app/helpers/home_helper.rb

package.json

yarn.lock