README instructions improved

README.md

-# pygal
+# PyGal
 
-Python Galery
+Python Galery
+
+----
+## Installation
+----
+### Get the repository
+####Go to the subfolder, where you want to create your new PaTT-Application (here ~/tmp)
+    cd ~/tmp
+#### Clone the repository
+    git clone https://git.mount-mockery.de/application/pygal.git
+#### Change to your repository and initialise it completely
+    cd pygal
+    git submodule init
+    git submodule update
+
+
+### Create your virtual environment
+#### Create python3 environment
+    virtualenv -p /usr/bin/python3 venv
+#### Activate the environment
+    source activate
+#### Upgrade all outdated packages
+    pip list -o --format freeze|cut -d '=' -f 1 | xargs pip install $1 --upgrade
+#### Install PaTT Requirements
+    pip install -r requirements.txt
+
+----
+## Configuration and Initialisation of PyGal
+----
+### Create your config File
+#### Copy the config example
+    cp config_example/config.py .
+    chmod 700 config.py
+
+#### Set a secret key
+Edit config.py and add a SECRET_KEY. Generate the secret e.g by executing the following command:
+
+    python manage.py
+
+At the End of the error message you'll see a random secret:
+
+KeyError: "You need to create a config.py file including at least a SECRET_KEY definition (e.g.: --> **'HERE IS THE RANDOM SECRET ;-)'** <--)."
+
+
+### Create your initial database and first user for PyGal
+    python manage.py migrate
+    python manage.py createsuperuser
+
+### Finalise Configuration
+Now there are two ways to finalise your configuration. The first way is for a test or development system. The other is for a production System.
+
+1. **Test or development System:** Edit
+    config.py
+and set the Variable
+    DEBUG
+to
+    True.
+
+2. **Production System:** Edit
+    config.py
+and set the Variable ALLOWED_HOSTS. Execute
+    "python manage.py collectstatic" to create a folder including all static files. Then add PaTT to your server configuration. See also [Django Documnetation](https://docs.djangoproject.com/en/3.1/howto/deployment/) for further information.
+
+----
+## Start the Test or development System
+----
+### Go to the folder, where your PyGal-Application is locates (here ~/tmp/pygal)
+    cd ~/tmp/pygal
+
+###Activate your Virtual Environment
+    source activate
+
+###Start the Server
+    python manage.py runserver
+
+
+[comment]: <> (----)
+[comment]: <> (## Backup))
+[comment]: <> (----)
+[comment]: <> (### Create Backup files)
+
+
+[comment]: <> (### Restore Backup)
+
+[comment]: <> (    source venv/bin/activate)
+
+[comment]: <> (If you are starting without a database, you need to create one)
+
+[comment]: <> (    python manage.py migrate)
+
+[comment]: <> (Afterward add data...)

config_example/config.py

 #
 # General settings
 #
+
+# SECURITY WARNING: don't run with debug turned on in production!
+# DEBUG = False
+
+# SECURITY WARNING: don't run with a dummy secret in production!
 # SECRET_KEY = 'define a secret key'
+
+# SECURITY WARNING: don't run with '0.0.0.0' in in production, unless you know what you are doing!
+# ALLOWED_HOSTS = ['127.0.0.1', ]
+
 #
 # ITEM_ROOT = os.path.join(BASE_DIR, 'data', 'example_data')
-# ALLOWED_HOSTS = []
 
 #
 # Access Right settings
 #
-# SUSPEND_PUBLIC = True        # Set this to True to ensure, that unauthenticated users have no permission
+
+# Set this to True to ensure, that unauthenticated users have no permission
+# SUSPEND_PUBLIC = True
 
 #
 # Style settings
 #
+
 # DEFAULT_THEME = 'clear-red'
 # THUMBNAIL_SIZES = [137, 175, 250]
 # WEBNAIL_SIZES = [450, 1100, 1750]
 #
 # Content settings
 #
-# SORT_BY_DATE = True          # Sorting by name if False
+
+# Sorting by name if False
+# SORT_BY_DATE = True
 # SHOW_IMAGE = True
 # SHOW_VIDEO = True
 # SHOW_AUDIO = False

main/settings.py

 # Default values, if not defined in config.py
 #
 USER_CONFIG_DEFAULTS = {
+    'DEBUG': False,
     'SECRET_KEY': None,
+    'ALLOWED_HOSTS': ['127.0.0.1', ],
     'DEFAULT_THEME': 'clear-red',
-    'ALLOWED_HOSTS': [],
     'ITEM_ROOT': os.path.join(BASE_DIR, 'data', 'example_data'),
     'THUMBNAIL_SIZES': [137, 175, 250],
     'WEBNAIL_SIZES': [450, 1100, 1750],
 if SECRET_KEY is None:
     chars = 'abcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*(-_=+)'
     s_key = ''.join([random.choice(chars) for n in range(50)])
-    secret_key_warning = "You need to create a config.py file including a variable config which is a dict  with at least a SECRET_KEY definition (e.g.: %s)." % repr(s_key)
+    secret_key_warning = "You need to create a config.py file including at least a SECRET_KEY definition (e.g.: %s)." % repr(s_key)
     raise KeyError(secret_key_warning)
 
-# SECURITY WARNING: don't run with debug turned on in production!
-#
-DEBUG = False
-
 
 # Application definition
 #