[1.1.X] Fixed #13417 -- Clarified the use of the djangojs domain for...

[1.1.X] Fixed #13417 -- Clarified the use of the djangojs domain for translation. Thanks to stephaner for the report and initial patch, and Ramiro Morales for his additional markup.

Backport of r13147 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.1.X@13152 bcc190cf-cafb-0310-a4f2-bffc1f526a37