Fix markdown ordered lists breaking after index.

Previously, Markdown ordered lists in user content (in posts,
comments, previews, etc) would display like this:

    1.
    Foo bar baz.

This is because sanitize populates them as <li><p>Foo bar baz.</p></li>
Rather than mess with the Markdown engine and still not have backwards
compatibility, this has been solved in the frontend using CSS to force
the <p> to display inline.

files/templates/util/assetcache.html

@@ -1,6 +1,6 @@
 {%-
 set CACHE_VER = {
-	'css/main.css': 340,
+	'css/main.css': 341,
 
 	'css/4chan.css': 61,
 	'css/classic.css': 61,