Where to translate these strings?

[AK]

Hi! A user from our Russian Ubuntu forum asked where to translate some 
strings from Mozilla Thunderbird preferences: "Show in the messaging 
menu", "For messages in all folders", "Only for messages in my Inbox 
folder".

He posts a bug report 
(https://bugzilla.mozilla.org/show_bug.cgi?id=1247559) and received an 
answer: "It's from Messaging Menu and Unity Launcher integration plugin".
Well, I found where is these strings in the source code 
(http://bazaar.launchpad.net/~extension-hackers/messagingmenu-extension/trunk/view/head:/locale/ru/messagingmenu.properties), 
but do somebody know where to translate them on Launchpad?

-- 
Алексей Кабанов (Aleksey Kabanov)
ak099 at mail.ru