Upgrade django & certifi

[coveralls]

Pull Request Test Coverage Report for Build 2712286512

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.5%) to 71.233%

---

Totals
Change from base Build 1005033246:	0.5%
Covered Lines:	468
Relevant Lines:	657

---

💛 - Coveralls

[odscjames]

Ben has done more work on this