Disables the vue-i18n eslint rules for files
that are not able to be autofixed, this will
stop these offences causing pipeline failures
but they will need manual fixing.

i18n linting for .vue files under the
app/javascripts/boards directory

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/59895

This reverts merge request !27313

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/59895

Upgrades prettier to 1.15.3
Runs `yarn prettier-save-all` against the codebase
Most changes are due to https://github.com/prettier/prettier/pull/5519