Take a look at the Syncfusion Essential JavaScript suite for the client side UI. For example, the grid:
http://js.syncfusion.com/demos/web/#!/bootstrap/grid/defaultfunctionalities
You can use it for free if you are under $1m revenuse and 5 developers.
There are loads of free JavaScript controls out there. Like http://js-grid.com/ and https://github.com/tabalinas/jsgrid-django
Make sure you're clear about the distinction between the front and back end. Django looks like a server side deal so it shouldn't really matter too much what client-side UI components you want to use.