Add default FormattedMessages for translations

[cyaiox]

The idea is to create a FormattedMessages for translations, allowing us to write the messages using the HTML tags <b></b> and <br></br>.

Instead of writing:

{
  "title": "The {bold_title}.{new_line}A description"
}

<T id="title" values={{bold_title: <strong>{foo}</strong>, new_line: <br />}} />

We could write using the following:

{
  "title": "The <b>{bold_title}</b>.<br></br>A description"
}

<T id="title" values={{bold_title: foo }} />

Documentation info: https://formatjs.io/docs/react-intl/components#formattedmessage