Several models.py?

Hi,

why do you use several models.py files?

```
guettli@yoga15:~/projects/StackOverFlow-Clone$ find -name models.py

./Contact/models.py
./StackoverflowClone/models.py
./blog/models.py
./Authentication/models.py
```

I would suggest that you use only one models.py file.

BTW, `find` is a linux command which lists files.

Read Contact/models.py, StackoverflowClone/models.py, blog/models.py, and Authentication/models.py to understand what each file contains and how they are used. Check the project structure and existing tests before deciding whether consolidation is safe; done means the model organization matches the issue's requested single-file structure without breaking current usage.

Written by the indexing model from the issue text.