def has_authorship?(user)
      return true if author.id == user.id
      committee_members.approved.where(decidim_users_id: user.id).any?
    end
def has_authorship?(user)
      return true if author.id == user.id
      committee_members.approved.where(decidim_users_id: user.id).any?
    end
PUBLIC

 Checks if user is the author or is part of the promotal committee
 of the initiative.

 RETURNS boolean