Remove VERSION file in favour of version entry in `package.json`. Parse
this version in our build server scripts.
This commit also introduces `standard-version` which we can use to
generate our `CHANGELOG.md` with `yarn run release`.
close#1831
The justification for this change is that the releases page on Github
is more likely to keep up to date than our changelog.
This also means that our changelog is not translated. But I think that's
fine.
- Fix tests by stubbing LocaleSwitch/client-only
- Add portuguese translations
- Add back to login link
- Use span over   following @alina-becks PR review on another PR