Updating rebase help

[Mads Kiilerich]

On 01/31/2013 07:08 PM, Wagner Bruna wrote:
> - the i18n repo tracks main, not crew: translation updates for 
> messages changed in crew will usually wait until those changes reach main.

Perhaps it should track crew instead. So far everything in crew has 
ended up being pulled into 'main'.

These days changes also tend to queue up in crew for a while before 
being pulled to 'main', giving less time for translators of 'main' to 
catch up before release.

/Mads