[1.2.X] Updated all existing translations after changes to filesize...

[1.2.X] Updated all existing translations after changes to filesize translation strings made in [15291].

Backport from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@15293 bcc190cf-cafb-0310-a4f2-bffc1f526a37