We applied the Capybara/SpecificMatcher in commit f52a86b46. However,
this rule doesn't convert methods finding <a> tags to methods finding
links because <a> tags only count as links when they've got the `href`
attribute. For instance, in the `xss_spec.rb` file we check what happens
when clicking on an anchor tag because we're testing that the `href`
attribute has been removed and so we can't use `click_link`.
So, basically, we can't enable a rule to automatically detect when we're
using `have_css` instead of `have_link`, but we should still do it
because `have_link` adds an extra check which affects accessibility
since it makes sure the tag has the `href` attribute and so it's
recognizable as a link by screen readers.
This class provides a method which shows whether a certain process is
enabled.
Even if it uses a helper, this class is inside the models folder because
the helper it uses actually only uses model methods. We might eventually
remove/simplify this helper and cache inside the model, like we did with
I18n content translations in commit 41dba842a.
