[imp] [PATCH] Add the Euro to the special characters console.

[Lord Apollyon]

> In IMP 3.x the charset the message is sent in is determined by the
> translation's charset.

I saw the entries in horde/config/lang.php - however for en_US and en_GB,
there is no explicit entry overriding the default, which seems to be clearly
labelled as such - however when I tried to change that, nothing changed in
the headers of my outgoing emails.

What did I miss?

=Lord Apollyon=