Gallery2: RU translation

PS2: redefines won't fly here. I'll have to change strings.xml.
     Either way, it won't be updated from AOSP anymore.
PS3: trigged Cid again.
PS4: hey Cid, are you going to verify this?
PS5: some strings updates. Used Sony NEX-5 UI for inspiration :)

Change-Id: I49d5a7d861f43a866f08e832ed1427bd4e632570