Update Python Dependencies (#404)

* [requires.io] dependency update

* Server starts...

Various things are broken, but it runs!

* [requires.io] dependency update

* [requires.io] dependency update

* [requires.io] dependency update

* FIX: Broken migrations

* FIX: Update auth framework

* FIX: Correct static use in templates

* FIX: Fix supplier sort

* FIX: Remaining tests

* Revert "Disable password reset as temporary fix to vulnerability (#396)"

This reverts commit e0c6a56263.

# Conflicts:
#	RIGS/urls.py

* FIX: Fix broken newlining in PDFs

Introduced by a change in Django 2.1 'HTML rendered by form widgets no longer includes a closing slash on void elements, e.g. <br>. This is incompatible within XHTML, although some widgets already used aspects of HTML5 such as boolean attributes.'

* FIX: Fix some Django4 deprecation warnings

Why not...

* Refactor dependency file

Should now only include dependencies we actually use, not dependencies of dependencies and unused things

* Add newlines to the paperwork print test event

This will catch the error encountered in 79ec9214f9

* Swap to pycodestyle rather than pep8 in Travis

And eliminate W605 errors

* Bit too heavy handed with the dep purge there...

* Whoops, helps if one installs pycodestyle...

* FIX: Re-add overridden login view

* Better fix for previous commit

* FIX: Bloody smartquotes

Co-authored-by: requires.io <support@requires.io>

RIGS/rigboard.py

@@ -110,7 +110,7 @@ class EventCreate(generic.CreateView):
         context['currentVAT'] = models.VatRate.objects.current_rate()
 
         form = context['form']
-        if re.search('"-\d+"', form['items_json'].value()):
+        if re.search(r'"-\d+"', form['items_json'].value()):
             messages.info(self.request, "Your item changes have been saved. Please fix the errors and save the event.")
 
         # Get some other objects to include in the form. Used when there are errors but also nice and quick.
@@ -206,7 +206,6 @@ class EventPrint(generic.View):
         }
 
         rml = template.render(context)
-
         buffer = rml2pdf.parseString(rml)
         merger.append(PdfFileReader(buffer))
         buffer.close()
@@ -219,7 +218,7 @@ class EventPrint(generic.View):
 
         response = HttpResponse(content_type='application/pdf')
 
-        escapedEventName = re.sub('[^a-zA-Z0-9 \n\.]', '', object.name)
+        escapedEventName = re.sub(r'[^a-zA-Z0-9 \n\.]', '', object.name)
 
         response['Content-Disposition'] = "filename=N%05d | %s.pdf" % (object.pk, escapedEventName)
         response.write(merged.getvalue())