manage.py startapp should create an "default" admin.py file

[Oliver Andrich]

Please look at this ticket as a polite feature request. I have been using the SVN version for some time, but in all projects I started after the newformsadmin merge, I made the same mistake - I added a admin.site.register(SomeClassName) to the models.py, which cause issues with manage.py shell and so on. I personally appreciate the AlreadyRegistered exception.

But as all Django users will use the automatic admin area, it would be a got practice to create a dummy admin.py file with the startapp command. I hope, this is understandable and might lower the learning curve for beginners and people like, whom are upgrading to 1.0.

[julian24]

duplicate of #8173