remove Django dependencies as they are not used

- move settings to gvafile.settings
- use gvafile.settings directly without Django support
- initialize Celery without Django
- remove Django requirements

docs/code.rst

@@ -2,11 +2,8 @@
 Code documentation
 ==================
 
-.. index:: Django
+gvafile is implemented as a set of `Celery`_ tasks.
 
-gvafile is implemented as `Django`_ project and provides some `Celery`_ tasks.
-
-.. _Django: https://www.djangoproject.com/
 .. _Celery: http://www.celeryproject.org/
 
 
@@ -23,57 +20,25 @@ The project module :py:mod:`gvafile`
    :members:
 
 
-:py:mod:`urls <gvafile.urls>`
------------------------------
-
-.. automodule:: gvafile.urls
-
-
 :py:mod:`exceptions <gvafile.exceptions>`
 -----------------------------------------
 
 .. automodule:: gvafile.exceptions
 
 
-:py:mod:`wsgi <gvafile.wsgi>`
------------------------------
-
-.. automodule:: gvafile.wsgi
-   :members:
-
-
 :py:mod:`settings <gvafile.settings>`
 -------------------------------------
 
 .. automodule:: gvafile.settings
-
-:py:mod:`base <gvafile.settings.base>`
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-.. automodule:: gvafile.settings.base
    :members:
 
-:py:mod:`local <gvafile.settings.local>`
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-.. automodule:: gvafile.settings.local
-
-:py:mod:`production <gvafile.settings.production>`
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-.. automodule:: gvafile.settings.production
-
-:py:mod:`test <gvafile.settings.test>`
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-.. automodule:: gvafile.settings.test
-
 
 :py:mod:`filservertasks` app
 ============================
 
 .. automodule:: fileservertasks
 
+
 :py:mod:`tasks <fileservertasks.tasks>`
 ---------------------------------------