Fixed #23856 -- Warned about downloading development version

Replicated the warning from
https://docs.djangoproject.com/en/1.7/intro/install/ about how the
development version is best used by those with experience looking to
test.
Removed unused file: accounts/profile_urls.py
Updated to Django 1.7

-Replaced south migrations with built-in migrations.
-Updated to use django-registration-redux.
Removed old static files, added new static files after redesign
Added compressor
Meta tags added to head of base.html
Redesign process WIP, part 1.

Removed django-compressor.
Changed headers to use new styles.
Changed scss to use relative paths.
Added overview.html.
Adding compiled CSS files
Path to font-awesome fixed.
base.html and homepage changes.

Footer added.
Right hand side content in a correct place with correct styling.
Overview page does not contain non-existing urls.
Added missing sidebar content to homepage
Cleanup of base and footer htmls
Cleaned up links in header
Added Getting Started with Django page
Made "Sites Using Django" on overview page visible
Fixed links on Getting started with Django page
Styled download page
Converted community section
Fixed #97 -- Moved DSF flatpages to new design