unsubscribe daily email people if they haven't read in the last 30 days

[owocki]

Description

unsubscribe daily email people if they haven't read in the last 30 days

Refers/Fixes

https://gitcoincore.slack.com/archives/CB1N0L6F7/p1594141095159400

Testing

tested locally

[thelostone-mc]

@owocki CI is failing ! We can get this in once that is resolved

[owocki]

just fixed the linter + pushed

[codecov]

Codecov Report

Merging #7077 into master will decrease coverage by 0.02%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #7077      +/-   ##
==========================================
- Coverage   26.30%   26.27%   -0.03%     
==========================================
  Files         300      301       +1     
  Lines       29424    29455      +31     
  Branches     4327     4330       +3     
==========================================
  Hits         7740     7740              
- Misses      21413    21439      +26     
- Partials      271      276       +5     

Impacted Files	Coverage Δ
...ng/management/commands/unsubscribe_daily_emails.py	0.00% <0.00%> (ø)
app/quests/views.py	16.22% <0.00%> (ø)
app/dashboard/views.py	10.56% <0.00%> (ø)
...rketing/management/commands/no_applicants_email.py	0.00% <0.00%> (ø)
...eting/management/commands/assemble_leaderboards.py	39.73% <0.00%> (ø)

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[owocki]

ok its passing now.