⬆️ Major bumps and django checks

Notably to django 3.2

main/views/general.py

@@ -6,11 +6,12 @@ from datetime import datetime, timedelta
 from django.conf import settings
 from django.contrib import messages
 from django.contrib.auth.models import User
-from django.core.urlresolvers import reverse
 from django.db.models import Min
 from django.forms import formset_factory
 from django.http import HttpResponseRedirect
 from django.shortcuts import render, redirect
+from django.urls import reverse
+
 from main.forms import OrderLineForm, OrderForm, DepositForm
 from main.models import Product, OrderLine, Order, Transaction
 from main.utils import users_format_js, users_with_perm