bzr ready for translations

[Jonathan Riddell]

Bug 83941 Bzr doesn't speak my tongue has been closed. Bzr can now be
translated. If you want to help bring bzr to those who prefer to work
in non-English languages please help translate at Launchpad (you will
need to be in the appropriate Launchpad translations team).

The translation will involve quite a bit of specialist language (what
is French for "colocated branch"?) and I expect there are strings yet
that need to be added to the translation file. I also need to look at
translations for plugins.

Jonathan