Add DX improvements

[brylie]

The book Boost Your Django DX contains many improvements for healthy and fun Django project development.

Epic

Implement the following DX improvements

• [x] #97
• [x] #98
• [ ] #99
• [x] #100
• [x] #101
• [x] #102
• [x] #92
• [x] #103
• [x] #104
• [x] #105
• [x] #106