Add support for getting the correct ip when behind a reverse proxy

[talavis]

• Tests passing
• Black formatting
• Migrations for any changes to the database schema
• Rebase/merge the dev branch
• Note in the CHANGELOG

[codecov]

Codecov Report

Merging #952 (38f39bf) into dev (592ad6b) will decrease coverage by 0.01%.
The diff coverage is 75.00%.

@@            Coverage Diff             @@
##              dev     #952      +/-   ##
==========================================
- Coverage   87.91%   87.89%   -0.02%     
==========================================
  Files          26       26              
  Lines        2895     2899       +4     
==========================================
+ Hits         2545     2548       +3     
- Misses        350      351       +1     

Impacted Files	Coverage Δ
dds_web/__init__.py	71.66% <66.66%> (-0.13%)	⬇️
dds_web/config.py	100.00% <100.00%> (ø)

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[i-oden]

LGTM!

Testing it out locally with your instructions will take more time than I have at the moment so I'm approving.