Fixed #13319 -- Modified the default verbosity level for "no fixtures loaded"...

Fixed #13319 -- Modified the default verbosity level for "no fixtures loaded" messages. Thanks to chtito for the report and patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@12945 bcc190cf-cafb-0310-a4f2-bffc1f526a37