feat: 4551 - minor cosmetic changes on settings display

[monsieurtanuki]

Impacted files

• app_en.arb: new "join the skill pool" label
• user_preferences_connect.dart: added dividers; changed the newsletter icon; same email icon everywhere
• user_preferences_contribute.dart: added "contribute" and a "join the pool" items; minor refactoring
• user_preferences_faq.dart: changed the "feedback" icon

Screenshot

faq (new feedback icon)	contribute (2 new items)

connect (top)	connect (bottom)

Fixes bug(s)

• Fixes: Add a link to join the skill pool #4551

Part of

• Misc fixes in settings #4580

[codecov-commenter]

Codecov Report

Merging #4589 (856ed77) into develop (e945b38) will increase coverage by 0.02%.
The diff coverage is 46.66%.

@@             Coverage Diff             @@
##           develop    #4589      +/-   ##
===========================================
+ Coverage    10.30%   10.32%   +0.02%     
===========================================
  Files          296      296              
  Lines        15403    15409       +6     
===========================================
+ Hits          1587     1591       +4     
- Misses       13816    13818       +2     

Files Changed	Coverage Δ
...ib/pages/preferences/user_preferences_connect.dart	4.72% <ø> (ø)
...pp/lib/pages/preferences/user_preferences_faq.dart	4.91% <ø> (ø)
...pages/preferences/user_preferences_contribute.dart	55.75% <46.66%> (+0.41%)	⬆️

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[teolemon]

Can you also use it for contact_title_press_page ?

[monsieurtanuki]

Can you also use it for contact_title_press_page ?

Done

[teolemon]

for the newsletter

for simple email

[monsieurtanuki]

"Stacked email" is not a flutter icon :(
Is that because we don't use material 3? Is that because we don't use the latest version of flutter? I don't know.
Please note the difference between https://fonts.google.com/icons?icon.query=email&icon.platform=web&icon.set=Material+Icons and https://fonts.google.com/icons?icon.query=email&icon.platform=web&icon.set=Material+Symbols
We can export/import it as svg if needed, though.

[teolemon]

• can you reduce the size of nutrient levels
• I've noticed a material icon for newspaper, aptly named newspaper. Is it the one we use for blog ?

[monsieurtanuki]

• I've noticed a material icon for newspaper, aptly named newspaper. Is it the one we use for blog ?

Indeed it is.

• can you reduce the size of nutrient levels

Just have in the latest push.

[monsieurtanuki]

Thank you @teolemon for your review!

#4580 is almost completely done too; I'll let you close it or fix the wordings.