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/tests/test_unit.py

@@ -59,8 +59,8 @@ class TestSampleDataGenerator(TestCase):
         assert Asset.objects.all().count() > 50
         assert Event.objects.all().count() > 100
         call_command('deleteSampleData')
-        assert Asset.objects.all().count() == 0
-        assert Event.objects.all().count() == 0
+        assert not Asset.objects.all().exists()
+        assert not Event.objects.all().exists()
 
 
 @override_settings(DEBUG=True)
@@ -76,9 +76,9 @@ def test_unauthenticated(client):  # Nothing should be available to the unauthen
                 assertTemplateUsed(response, 'login_redirect.html')
             else:
                 if "embed" in str(url):
-                    expected_url = "{0}?next={1}".format(reverse('login_embed'), request_url)
+                    expected_url = f"{reverse('login_embed')}?next={request_url}"
                 else:
-                    expected_url = "{0}?next={1}".format(reverse('login'), request_url)
+                    expected_url = f"{reverse('login')}?next={request_url}"
                 assertRedirects(response, expected_url)
     call_command('deleteSampleData')