fix: Apply various suggestions from @martinthomson

[larseggert]

CC @martinthomson

[codecov]

Codecov Report

Merging #4849 (8c1d203) into main (a7c0cc0) will not change coverage.
The diff coverage is 83.33%.

@@           Coverage Diff           @@
##             main    #4849   +/-   ##
=======================================
  Coverage   88.46%   88.46%           
=======================================
  Files         296      296           
  Lines       39755    39755           
=======================================
  Hits        35168    35168           
  Misses       4587     4587           

Impacted Files	Coverage Δ
ietf/api/views.py	89.47% <ø> (ø)
ietf/ietfauth/urls.py	100.00% <ø> (ø)
ietf/stats/views.py	93.10% <0.00%> (ø)
ietf/submit/forms.py	82.74% <0.00%> (ø)
ietf/utils/decorators.py	87.65% <0.00%> (ø)
ietf/utils/mail.py	79.62% <0.00%> (ø)
ietf/nomcom/forms.py	95.39% <50.00%> (ø)
ietf/mailinglists/models.py	89.65% <66.66%> (ø)
ietf/group/models.py	92.67% <100.00%> (ø)
ietf/ietfauth/forms.py	95.13% <100.00%> (ø)
... and 6 more

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.