Improve block management

[micahmo]

Pull Request Description

This PR adds a few improvements around block management.

1. Localize account settings page.
2. Show community and user icons in block settings.
3. Show display names.
4. Make users/communities tappable to visit.
5. New ability to add blocks directly from the settings page.
   • Including a new user/community picker dialog with support for autocomplete/search or direct name (via all of the syntax that we support in link detection).

P.S. I hope the username autocomplete can be used in the post/comment editor at some point (i.e., #256).

Issue Being Fixed

Issue Number: N/A

Screenshots / Recordings

Before

After

qemu-system-x86_64_Ft7pdXx9Ku.mp4

Checklist

• Did you update CHANGELOG.md?
• Did you use localized strings where applicable?
• Did you add semanticLabels where applicable for accessibility?

[machinaeZER0]

Beautiful!

[hjiangsu]

Looks pretty nice! Just a couple of suggestions:

• Could we move the logic for the user/community autocomplete to their own separate widgets as a way for them to be re-used elsewhere in the future? This could be placed in the lib/shared directory!
• Not sure if its just me, but I feel like theres a bit too much padding on the right side of the screen (where the add/remove icons are) Maybe we can reduce the padding there slightly?

[micahmo]

Could we move the logic for the user/community autocomplete to their own separate widgets as a way for them to be re-used elsewhere in the future? This could be placed in the lib/shared directory!

Done!

I feel like theres a bit too much padding on the right side of the screen (where the add/remove icons are)

I agree! This seems to be a function of the ListTile's default contentPadding. I overrode that, and I think it's better now.

[hjiangsu]

Looks good now! Thanks :D