Ubuntu installer (ubiquity) string freeze exception

[Evan Dandrea]

Bug https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/752372
requests a string freeze exception for the desktop CD installer,
ubiquity.  This was done to address concerns that individuals might
fairly assume the upgrade functionality in the installer and the
upgrade functionality in update-manager have the same behavior.  They
do not, which I've elaborated on at
https://lists.ubuntu.com/archives/ubuntu-devel-announce/2011-April/000841.html
.

I apologize for such a last minute change.  The partitioning page of
the installer packs in a lot of new functionality this cycle and we've
been working hard to ensure that it's as clear as possible on the
different options available.

If you feel your team cannot retranslate this in time, please speak up
as a poorly worded native string is better than a completely
incomprehensible English one.

Thanks bunches,
Evan