Update views.py

Fix "CKEditor image upload does not work in windows". Both slashes "/" and reverse slash "\" should be replaced.
changed imports in urls.py to work with newer django
Use correct static file accessor

Static files should be accesed thru 'static' tag.
Merge branch 'master' of https://github.com/Zer0-/django-ckeditor
Merge branch 'master' of https://github.com/ribozz/django-ckeditor