[Dctrl-tools-i18n] Dctrl-tools translation update

[Antti-Juhani Kaijanaho]

Translation of dctrl-tools (grep-dctrl and friends) has moved to Rosetta 
(https://launchpad.net/rosetta). The current etch release candidate is 
in Rosetta at 
https://launchpad.net/products/grep-dctrl/+series/etch/+translations) 
All translations are behind currently.

I'm sure someone on this list can point to friendly translator-oriented 
docs of Rosetta :)