Plugins/Alarm/Changelog

Better errors handling
Support for incoming <ding> keyword. JAJC plugin buzz and yahoo uses it for their alarms.
Smart sending: plugin sends inbound alarms only to clients which supports them and keyword <ding> to others. It is disabled by default.
Now "alarm!" is not hardcoded keyword and you can change it as you wish.

Fix: Alarm sound now plays under windows too
Now it's possible to receive alarm with keyword "alarm!" instead of using iq stanza (inbound alarm) (for other clients)
Resort default rule list for better usability