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.
Note using `params[:relatable_type].classify` is recognized as a
security risk by some tools. However, it's a false positive, since we've
added constraints to the URL so that paramenter can only have the values
we trust.
