Trending quests in daily email

[danlipert]

Description

This PR adds a section to the daily email to add a trending quests section

Refers/Fixes

n/a

Testing

Tested locally

[owocki]

cc @frankchen07 in case its useful for #6011

[frankchen07]

thanks i think it will be

[codecov]

Codecov Report

Merging #6080 into master will increase coverage by 11.15%.
The diff coverage is 20%.

@@             Coverage Diff             @@
##           master    #6080       +/-   ##
===========================================
+ Coverage   17.52%   28.68%   +11.15%     
===========================================
  Files         259      273       +14     
  Lines       23005    29112     +6107     
  Branches     3341     5062     +1721     
===========================================
+ Hits         4032     8350     +4318     
- Misses      18963    20346     +1383     
- Partials       10      416      +406

Impacted Files	Coverage Δ
app/app/urls.py	77.41% <ø> (+77.41%)	⬆️
app/marketing/mails.py	13.89% <0%> (+5.26%)	⬆️
app/marketing/views.py	8.53% <17.64%> (+8.53%)	⬆️
app/retail/emails.py	22.86% <50%> (+3.51%)	⬆️
app/inbox/utils.py	37.03% <0%> (-37.97%)	⬇️
app/townsquare/tasks.py	36.17% <0%> (-10.26%)	⬇️
app/townsquare/models.py	66.36% <0%> (-10.11%)	⬇️
app/avatar/views_3d.py	13.7% <0%> (-4.79%)	⬇️
app/dashboard/tasks.py	38.63% <0%> (-4.23%)	⬇️
app/kudos/tasks.py	34.09% <0%> (-3.75%)	⬇️
... and 114 more

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