Converted Slovak localflavor doctests into unitttests. We have always been at...

Converted Slovak localflavor doctests into unitttests.  We have always been at war with doctests.  Thanks to Idan Gazit.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14952 bcc190cf-cafb-0310-a4f2-bffc1f526a37