#101 [MSILO] Don't store and notify when "Message Composition"

[Iñaki Baz Castillo]

MSILO sends a MESSAGE notification to the sender (if configured) when a MESAGE is stored. But it shouldn't do it (store and notify sender) if the MESSAGE is a "Message Composition" according to RFC 3994 - "Indication of Message Composition for Instant Messaging".
For example X-Lite uses it.

This feature can be implemented manually in the script by adding:

if ($cT == "application/im-iscomposing+xml")
return(-1); # Don't store this "is typing..." Message

but it would be nice if this feature is included in the core of MSILO.

I don't know if other kind of MESSAGE could be also discarted.