double-escaped curly quote in dents from @identica

I noticed some dents from @identica (the account) this morning that - both in XMPP and on the website - had an escaped numeric entity reference in them. Here's a bit of source code from one of them:
{{{
identica
Laconica 0.6.1 delayed until Sunday night: Brief notice: Laconica 0.6.1’s release (a minor release.. http://is.gd/3vym
}}}

It seems the curly quote is first turned into an entity ref, and before sending it's escaped turning the {{{&}}} into {{{&}}}.

Suggested solution: don't escape at all, just send the actual ''character'' and use UTF-8 encoding.

Possibly related: #533