jabber: Update iris (#2680)

Includes fix for http://www.kadu.im/redmine/issues/2680.

Signed-off-by: Bartosz Brachaczek <b.brachaczek@gmail.com>
history: #2756 fixed: problems with sorting

Signed-off-by: Rafał Malinowski <rafal.przemyslaw.malinowski@gmail.com>
gui: fix crash when changing icons
icons: Faenza theme added

Signed-off-by: Rafał Malinowski <rafal.przemyslaw.malinowski@gmail.com>