SF-3453 Fix missing Indonesian BTs when language is Azerbaijani

[pmachapman]

This PR fixes a bug where "id" translations are defined as being in the "ıd" language code when a user whose language is Azerbaijani performs a sync.

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This change is 

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.50%. Comparing base (9392541) to head (ef2156c).
Report is 1 commits behind head on master.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3295   +/-   ##
=======================================
  Coverage   82.50%   82.50%           
=======================================
  Files         605      605           
  Lines       35204    35193   -11     
  Branches     5702     5700    -2     
=======================================
- Hits        29044    29036    -8     
+ Misses       5316     5315    -1     
+ Partials      844      842    -2     

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[Nateowami]

Can we try to replace all uses of ToLower with ToLowerInvariant throughout the application?

[pmachapman]

Can we try to replace all uses of ToLower with ToLowerInvariant throughout the application?

Good idea - Done. I found another case of this bug (although even more obscure) for Avatars, and fixed the MD5 function which was not correctly handling Unicode, and was using a slower, older method of hashing.

[RaymondLuong3]

I was able to see the original issue with biblical terms. Thanks for the work and the update to the MD5 hashing.

Reviewed 2 of 2 files at r1, 5 of 5 files at r2, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @pmachapman)