Update User Guide and translations

[imnasnainaec]

This change is 

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.20%. Comparing base (205ac91) to head (9d9eb6b).
⚠️ Report is 25 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3889      +/-   ##
==========================================
+ Coverage   65.71%   74.20%   +8.48%     
==========================================
  Files         237      288      +51     
  Lines        6044    10623    +4579     
  Branches      756     1323     +567     
==========================================
+ Hits         3972     7883    +3911     
- Misses       1823     2353     +530     
- Partials      249      387     +138     

Flag	Coverage Δ
backend	85.41% <ø> (?)
frontend	65.71% <ø> (ø)

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[jasonleenaylor]

Reviewed 10 of 10 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @imnasnainaec)