They do the exact same thing; however `html_safe` might confuse
developers into thinking it will make the HTML safe. Using `raw` makes
it clear that we're inserting the text without escaping it.
We were using `Rinku.auto_link` the same way twice. And it makes sense
that the method `sanitize_and_auto_link` first sanitizes the text and
then calls `auto_link_already_sanitized_text`.
The name `safe_html_with_links` was confusing and could make you think
it takes care of making the HTML safe. So I've renamed it in a way that
makes it a bit more intuitive that it expects its input to be already
sanitized.
I've changed `text_with_links` as well so now the two method names
complement each other.
