Added production settings and support for secret values from env variables (#118)

* Added Django-environ support and Production settings

* Option to set db settings in both ways

* Added setuptools in req.txt

* Minor bug fix

---------

Co-authored-by: Horilla <131998600+horilla-opensource@users.noreply.github.com>

.env.dist

@@ -0,0 +1,41 @@
+# Set "DEBUG=False" for production
+DEBUG=True
+
+# Get a secure secret key from https://djecrety.ir
+SECRET_KEY=django-insecure-j8op9)1q8$1&0^s&p*_0%d#pr@w9qj@1o=3#@d=a(^@9@zd@%j
+
+# Don't use "*" for ALLOWED_HOSTS in production
+ALLOWED_HOSTS=www.example.com,example.com,*
+
+# Database URL
+
+DATABASE_URL=postgresql://user:password@localhost:5432/dbname
+
+# ----OR----
+
+# Database Configuration 
+
+DB_ENGINE=django.db.backends.postgresql
+DB_NAME=dbname
+DB_USER=user
+DB_PASSWORD=password
+DB_HOST=localhost
+DB_PORT=5432
+
+
+# Supportted Formats for DATABASE_URL :
+
+# PostgreSQL: ``postgres[ql]?://`` or ``p[g]?sql://``
+# PostGIS: ``postgis://``
+# MySQL: ``mysql://`` or ``mysql2://``
+# MySQL (GIS): ``mysqlgis://``
+# MySQL Connector Python from Oracle: ``mysql-connector://``
+# SQLite: ``sqlite://``
+# SQLite with SpatiaLite for GeoDjango: ``spatialite://``
+# Oracle: ``oracle://``
+# Microsoft SQL Server: ``mssql://``
+# PyODBC: ``pyodbc://``
+# Amazon Redshift: ``redshift://``
+# LDAP: ``ldap://``
+
+