Add documentation and source

Added documentation, source and extra files.

source/translation/README.md

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+# Procedure for generating translations
+
+1. Define the default language in your `settings.py`.
+1. All your strings should be in the default language.
+1. Optional: Define available languages by adding the `LANGUAGES` setting if you want.
+
+# For a Django app
+
+- Create `locale` directory in your Django app. Django won't create it by itself.
+- Check your app is registered in `INSTALLED_APPS`.
+- `makemessages -l <language>`