roll back / more options for .po import

[Mark Shuttleworth]

Martin Juergens wrote:

>I just noticed that someone overwrote my translations from
>update-notifier. That is really bad because the new translation had had
>a lot of spelling mistakes etc. I tried to correct nearly everything and
>I hope that it is ok now.
>  
>
Hmm... is Ubuntu translation locked down at all? Perhaps we should do
this? We have the ability to require that people be in designated
translation teams to translate.

Carlos, Jordi: perhaps we should also create another "level" of locking,
where we allow people to translate freely in languages that DO NOT have
a designated translator, but lock those that DO have a designated
translator. Make sense? That means that languages could quickly get
going, and when people have made substantial translations they can say
"OK, we'll become a designated translation team" and then stop people
from stomping on their translations as happened here.

Mark