Hotfix/rspamd settings member alias

[EricTRL]

• Fixed an issue where Member.objects.filter_active() returned duplicate members if a member has a membership in multiple active years. Also added a test for this.
• Fixed an issue where development and production Mailcow items could conflict. Development aliases and Rspamd rules now use a [DEV] prefix
• Fixed an issue where the current Rspamd rule rejected every mail sent to the listed addresses. Wanted behaviour is now achieved using two separate Rspamd rules with different priorities. Note: If an email matches an Rspamd rule, then no further rules are checked.

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (62923f2) 95.83% compared to head (170f87d) 95.84%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #331   +/-   ##
=======================================
  Coverage   95.83%   95.84%           
=======================================
  Files         161      161           
  Lines        7106     7118   +12     
  Branches     1165     1166    +1     
=======================================
+ Hits         6810     6822   +12     
  Misses        194      194           
  Partials      102      102           

Flag	Coverage Δ
unittests	95.84% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
mailcow_integration/admin_status/views.py	95.21% <100.00%> (ø)
mailcow_integration/squire_mailcow.py	100.00% <100.00%> (ø)
membership_file/models.py	98.60% <100.00%> (ø)

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.