[installer] Update docs, comments, pw

[imnasnainaec]

This change is 

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.70%. Comparing base (0dc83d0) to head (2c9cfbd).
Report is 16 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3391   +/-   ##
=======================================
  Coverage   74.70%   74.70%           
=======================================
  Files         280      280           
  Lines       10856    10856           
  Branches     1317     1317           
=======================================
  Hits         8110     8110           
  Misses       2374     2374           
  Partials      372      372           

Flag	Coverage Δ
backend	83.92% <ø> (ø)
frontend	66.63% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[jasonleenaylor]

Reviewed 6 of 7 files at r1, 11 of 11 files at r2, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @imnasnainaec)