Update Django to 2.2

[onlinejudge95]

Fixes #684

• Updates the Django version to next minor release i.e. 1.10

[onlinejudge95]

Blocked by dcramer/django-uuidfield#67

The issue is related to the package django-uuidfield==0.5.0. TBH that repo seems abandoned due to the fact that commits are over a decade ago 😕 We can go around by creating a fork but as a heads up there are other dependencies also following the same path.

cc:- @palnabarun

[palnabarun]

@onlinejudge95 -- There has been some work already in that direction by @sks444 on #664. I suggest you two to collaborate on this if possible.