Fix various minor issues (#545)

* Add absolute URL to power tests

* Update to target Python 3.10

* Return user to current page when clicking 'mark reviewed'

* Add units to power test record detail and form

I'm a bad scientist (coz I'm an engineer)

* Allow a higher value in PSSC fields

* Default venue to event venue in EC/PT

* Fix population of initial venue values for EC/PT

* Add link to create power test from EC detail

* Do not set power plan field to required on RA

"This might be a problem if the risk assessment is being done by one person and the power plan by another."

* Default power MIC to MIC

* Implement some suggestions from the Doctor

* Prevent checking in to cancelled events and dry hires

Will close #539

* Exclude dry hires from H&S overview list

* Add "ex VAT" tooltips to asset purchase price and replacement cost

* Automagically clear and focus ID field when audit modal closes

Closes #533

* Delete unused things

* Allow two decimal places in cable length, show training item IDs in selectpicker

Will close #540

* Fix #524 500 Error when viewing qualification list for items nobody is qualified in

* Update README.md

* Add a guard against nulls in recent changes

Maybe fixes #537 I'm unable to replicate locally

* Turn down verbosity of CI tests, fix tests, potential speedup

* Squash migration

* Add encoding to open

* Update to v3 upload-artifact

Resolves a deprecation warning

PyRIGS/views.py

@@ -48,7 +48,7 @@ class Index(generic.TemplateView):  # Displays the current rig count along with
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)
         context['rig_count'] = models.Event.objects.rig_count()
-        context['now'] = models.Event.objects.events_in_bounds(timezone.now(), timezone.now())
+        context['now'] = models.Event.objects.events_in_bounds(timezone.now(), timezone.now()).exclude(dry_hire=True).exclude(status=models.Event.CANCELLED)
         return context
 
 
@@ -135,10 +135,11 @@ class SecureAPIRequest(generic.View):
             query = reduce(operator.and_, queries)
             objects = self.models[model].objects.filter(query)
             for o in objects:
+                name = o.display_name if hasattr(o, 'display_name') else o.name
                 data = {
                     'pk': o.pk,
                     'value': o.pk,
-                    'text': o.name,
+                    'text': name,
                 }
                 try:  # See if there is a valid update URL
                     data['update'] = reverse(f"{model}_update", kwargs={'pk': o.pk})
@@ -183,7 +184,7 @@ class ModalURLMixin:
             url = reverse_lazy('closemodal')
             update_url = str(reverse_lazy(update, kwargs={'pk': self.object.pk}))
             messages.info(self.request, "modalobject=" + serializers.serialize("json", [self.object]))
-            messages.info(self.request, "modalobject[0]['update_url']='" + update_url + "'")
+            messages.info(self.request, f"modalobject[0]['update_url']='{update_url}'")
         else:
             url = reverse_lazy(detail, kwargs={
                 'pk': self.object.pk,