Logging: Configure

refs #6812

Configure Django's logging and change references from logging root module
(logging.foo) to the fetched logger. Disable South having logging at
DEBUG.
Migrations: Fix to upgrade from 0.4.0 migration

Fix 0004_v0_4_0 migration to match what's in the stable/0.4.0 branch.
Update the fedora and duracloud migrations to upgrade properly.
Resources: Update mimetype to content_type in HttpResponse

refs #7305

mimetype is deprecated in Django 1.7, replaced by content_type
Django: Update to 1.7

refs #7307

Update Django and Tastypie versions. Update test runner default to suppress
warnings. Remove South, as it is built in now.
URLs: Update to new URL syntax

Remove patterns, and rely on stock Python regex behaviour.
Migrations: Update for Django 1.7

refs #7307