feat: Fields visibility and visibility forms

[vladislavkeblysh]

• Fixed the display of fields in a user's profile when viewing it from our own account to another user's profile that was just created (by default, the fields Full name, Location, and Certificates (if any) are displayed).
• Fixed the display of empty fields in a user's profile when viewing it from our own account to another user's profile that was just created. Fields that are not filled in will not be displayed (previously, if a field was not filled in, the field name was displayed, but not the value).
• Fixed the behavior of forms for a newly created user. Previously, if you changed the value of one field to Just me for the first time, the values of other fields were also reset to Just me. Now, only the value of the edited field is changed.

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[e0d]

@vladislavkeblysh seeing some linting failures.

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (b892ba7) 66.22% compared to head (78efcd7) 66.82%.
Report is 18 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #864      +/-   ##
==========================================
+ Coverage   66.22%   66.82%   +0.60%     
==========================================
  Files          52       52              
  Lines         823      850      +27     
  Branches      158      176      +18     
==========================================
+ Hits          545      568      +23     
- Misses        268      272       +4     
  Partials       10       10              

Files	Coverage Δ
src/profile/data/selectors.js	91.58% <100.00%> (+0.16%)	⬆️
src/profile/ProfilePage.jsx	84.61% <95.65%> (+3.73%)	⬆️
src/profile/data/sagas.js	58.44% <50.00%> (-0.23%)	⬇️

... and 1 file with indirect coverage changes

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[vladislavkeblysh]

@e0d Fixed

[justinhynes]

I'll be taking a look at this today!

[justinhynes]

@vladislavkeblysh Should we also be preparing a backport of this functionality to Quince now that the branches are cut for the next release? (Sorry to create extra work)

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