* Rename `Product Title` `Content` panel to `Link settings`
* Rename toggle `Link to Product Page` to `Make title a link`
* Remove help text
* Add `rel` and `linkTarget` to the `Product Title` settings
* Add `rel` and `linkTarget` to the `Product Title` block
* Only add the `target` attribute if the title is rendered as a link
* Keep the `nofollow` in rel as it was before
* Make `linkTarget` and `rel` optional
To not change the html generated for other components also using `ProductName`
* Add tests fotr the `Title` component
* Improve rel condition
* Extract `linkRel` variable
* Remove unnecessary undefined
* Remove the default value for `linkTarget`
Since it is the default behavior of the browsers, we don't need it.
* Remove the `nofollow` rel value
It was decided to remove it since it's a link to internal pages.
See the PR discussion for more context.
* Remove the `rel` option
It does not have much sense to have it since it's always an internal link.
See the PR discussion for more context.
* Clean-up `rel` related code