[ubuntu-uk] Email notifier, black-on-black panel legends

[Rowan Berkeley]

I found solutions to both of these. There is a tray notifier for
Evolution (though not one for Thunderbird) in the repositories, namely
the packets mail-notification and mail-notification-evolution. As for
the black-on-black panel legends problem, it is solved by switching the
desktop theme from 'Human' (the default) to 'DarkRoom'.