frontend updates

[kalidiagne]

This PR includes:

• [x] https://github.com/cursive-team/connections/issues/78
• [x] https://github.com/cursive-team/connections/issues/76
• [x] https://github.com/cursive-team/connections/issues/74
• [x] https://github.com/cursive-team/connections/issues/75

And the followings:

• [x] added banner, also already in activity and people page
• [x] edit profile page
• [x] add NarrowCast page

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Name	Status	Preview	Comments	Updated (UTC)
connections	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Oct 18, 2024 9:45pm

[RiverRuby]

Closes #80 as well