TagSetPresenter: refactor to pass options explicitly.

Refactor tag_list_html, split_tag_list_html, and inline_tag_list_html to
take the `show_extra_links` and `current_query` options explicitly,
rather than implicitly relying on CurrentUser or taking `params[:tags]`
from the template.

app/presenters/post_set_presenters/pool.rb

@@ -12,10 +12,6 @@ module PostSetPresenters
       )
     end
 
-    def tag_list_html(template)
-      tag_set_presenter.tag_list_html(template)
-    end
-
     def post_previews_html(template)
       html = ""