This package shouldn't be installed when using another DB
eg: PostgreSQL with the Postgis extension.

Fixed bug introduced in 1ca800d2

Ci testing

      - CentOS 7
      - Ubuntu 16.04
      - Debian 8
      - Debian 9
     Fixed deprecated filters syntax
     Added check to exclude SELinux tasks for docker containers

[firewalld] Added tasks to install, enable and start firewalld

[docs] Updated README

[django_cache] Adds cache templating settings #78

Made changes to settings.py in templates/openwisp2 from the references
mentioned to enable django templating using django redis.
Added variable openwisp2_redis_location in defaults/main.yml for django redis

Fixes Issue #78

[docs] Improve VM installation guide

- simplified loop
- updated README

Closes #51 

Updated README for ansible minimum version

For issue #71

The previous commit broke old systems (Debian 8 & Ubuntu 14).

Fix spatialite bug

Closes #63

Fix guide on local installation

Closes #34

Improve installation instructions

Fixes #59

Always try local files before sending the request to django

replaced deprecated functions in main.yml