more succinct docstrings in models.py
more succinct docstrings in models.py

ECastro10/free-geek,Brigette-Eckert/free-geek,mbrochmann/free-geek,Brigette-Eckert/free-geek,Brigette-Eckert/free-geek,ECastro10/free-geek,mbrochmann/free-geek,mbrochmann/free-geek,Brigette-Eckert/free-geek,mbrochmann/free-geek,ECastro10/free-geek,ECastro10/free-geek