tag_set_presenter: refactor inline_tag_list_html.

* Sort tags by category in inline tag lists (on /comments page, /uploads page, and modqueue).
* Move tags css to common/erb/tags.scss.erb.

app/assets/stylesheets/application.scss

@@ -6,5 +6,5 @@
 // directory and load them explicitly to work around this.
 // https://github.com/rails/sass-rails/issues/185
 @import "specific/*";
-@import "specific/erb/posts";
 @import "specific/erb/mod_queue";
+@import "common/erb/tags";