[dashboard] Murano dashboard doesn't work with Django 1.6.5

[Anastasia Kuznetsova]

Due to global requirement: Django>=1.4,<1.7 murano-dashboard should work with Django 1.6.5 but it doesn't.

Environment:

Request Method: POST
Request URL: http://<url>/auth/login/

Django Version: 1.6.5
Python Version: 2.7.3

Traceback:
File "/home/fervent/Projects/dashboard_test/.venv/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  199. response = middleware_method(request, response)
File "/home/fervent/Projects/dashboard_test/.venv/local/lib/python2.7/site-packages/django/contrib/sessions/middleware.py" in process_response
  38. request.session.save()
File "/home/fervent/Projects/dashboard_test/.venv/local/lib/python2.7/site-packages/django/contrib/sessions/backends/db.py" in save
  57. session_data=self.encode(self._get_session(no_load=must_create)),
File "/home/fervent/Projects/dashboard_test/.venv/local/lib/python2.7/site-packages/django/contrib/sessions/backends/base.py" in encode
  87. serialized = self.serializer().dumps(session_dict)
File "/home/fervent/Projects/dashboard_test/.venv/local/lib/python2.7/site-packages/django/core/signing.py" in dumps
  88. return json.dumps(obj, separators=(',', ':')).encode('latin-1')
File "/usr/lib/python2.7/json/__init__.py" in dumps
  238. **kw).encode(obj)
File "/usr/lib/python2.7/json/encoder.py" in encode
  201. chunks = self.iterencode(o, _one_shot=True)
File "/usr/lib/python2.7/json/encoder.py" in iterencode
  264. return _iterencode(o, 0)
File "/usr/lib/python2.7/json/encoder.py" in default
  178. raise TypeError(repr(o) + " is not JSON serializable")

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/101578
Committed: https://git.openstack.org/cgit/stackforge/murano-dashboard/commit/?id=9bac4c9ba28c0259ac17c2f55a814c1d71e39b94
Submitter: Jenkins
Branch: master

commit 9bac4c9ba28c0259ac17c2f55a814c1d71e39b94
Author: Ekaterina Fedorova <email address hidden>
Date: Tue Jun 24 17:48:49 2014 +0400

    Introduces script for updating horizon config

    Since now, all custom murano settings stores at update_settings.sh
    so it exempts from maintaining two config files at the same time.
    This script intends to update developer config and production config.

    Usage:

    ./update_settings

    Arguments:
    --input={FILE} File to which Murano data will be added, if skipped horizon config from git repository will be downloaded
    --output={FILE} File to store the result file, if skipped it equals to the --input
    --log-file={FILE} File to store murano dashboard logs instead of default output
    --remove Remove Murano data from the specified file

    To update developer settings use the following command:
    ========================================================
    update_setting.sh --output="muranodashboard/settings.py"
    ========================================================

    Change-Id: I6e947f8887dfdcdc1f5651dd6acdc28bf9d924bf
    Closes-Bug: #1332557
    Implemets: blueprint separate-muranodashboard-config