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

pipeline/source_assets/js/interaction.js

@@ -6,11 +6,6 @@ function setupItemTable(items_json) {
     newitem = -1;
 }
 
-function nl2br(str, is_xhtml) {
-    var breakTag = (is_xhtml || typeof is_xhtml === 'undefined') ? '<br />' : '<br>';
-    return (str + '').replace(/([^>\r\n]?)(\r\n|\n\r|\r|\n)/g, '$1'+ breakTag +'$2');
-}
-
 function escapeHtml(str) {
     return $('<div/>').text(str).html();
 }