Admin fines datatable page

[patphongs]

Closing in favor of #2639

Summary

• Resolves Implement AF datatable page #2438
  This adds Admin fines datatable page to the enforcement legal features.

How to test

1. vi ~/.bash_profile and insert this feature flag for ADRs export FEC_FEATURE_AFS=true
2. Open a new terminal window and run the branch
3. Go to http://localhost:8000/data/legal/search/admin_fines/ to test the page. At this point, none of the canonical Admin fine links will work since that is phase 2 of the development for this feature.

Impacted areas of the application

List general components of the application that this PR will affect:

• Enforcement Admin fines datatable page

Screenshots

[codecov-io]

Codecov Report

Merging #2533 into develop will decrease coverage by 0.16%.
The diff coverage is 28.57%.

@@            Coverage Diff             @@
##           develop   #2533      +/-   ##
==========================================
- Coverage    75.07%   74.9%   -0.17%     
==========================================
  Files          116     116              
  Lines         6977    6990      +13     
  Branches       599     599              
==========================================
- Hits          5238    5236       -2     
- Misses        1739    1754      +15

Impacted Files	Coverage Δ
fec/fec/settings/base.py	87.5% <ø> (ø)	⬆️
fec/legal/views.py	50% <11.11%> (-4.55%)	⬇️
fec/legal/urls.py	75% <50%> (-8.34%)	⬇️
fec/data/api_caller.py	30.56% <66.66%> (+0.17%)	⬆️
fec/fec/static/js/modules/toc.js	87.17% <0%> (-10.26%)	⬇️
fec/data/views.py	47.7% <0%> (-0.46%)	⬇️

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[lbeaufort]

Looks good, thanks @patphongs !