[1.2.X] Fixed #14777 -- Added docs on working around the Python CSV module's...

[1.2.X] Fixed #14777 -- Added docs on working around the Python CSV module's lack of Unicode support. Thanks to adamv for the report and draft patch.

Backport of [14749] from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@14750 bcc190cf-cafb-0310-a4f2-bffc1f526a37