def is_tag?(check = nil)
      return false if params[:slug].blank?
    	segments = params[:slug].split('/')
      if check.blank?
        Setting.get('tag_slug') == segments[1] ? true : false 
      else
        term = obtain_term(segments)
        term_check('tag_slug', segments)
      end
    end
def is_tag?(check = nil)
      return false if params[:slug].blank?
    	segments = params[:slug].split('/')
      if check.blank?
        Setting.get('tag_slug') == segments[1] ? true : false 
      else
        term = obtain_term(segments)
        term_check('tag_slug', segments)
      end
    end
returns a boolean as to whether the current page is either an tag view or whether it is the given tag provided by the check variable
 Params:
 +check+:: ID, slug, or name of the tag - if this is nil it will just check to see if the current view is a tag view