adding some comments to the code
|Reported by:||Andrew Gibson||Owned by:||Andrew Gibson|
|Component:||Database layer (models, ORM)||Version:||master|
|Has patch:||yes||Needs documentation:||no|
|Needs tests:||no||Patch needs improvement:||no|
I'd like to try and start contributing to django, so i've been reading the source to better understand how things work. I figured I could contribute what I've learned as comments for whoever comes after me.