General adjustments to the project

I've made some general adjustments to the project, the ones we talked about and some others.

I also had a closer look at the script in the ``bin`` directory and I realized that Django already provides a way for what those functions are meant to do. Have a look at the ``model_to_dict`` function in [``django.forms.models``](https://github.com/django/django/blob/master/django/forms/models.py#L98).