Change appearance of account cards in web UI

[Gargron]

[ClearlyClaire]

This:

• changes the account cards currently used in the profile directory by:
  • replacing the “last active” bit with the number of people being followed by the account
  • changing the icon button to follow/unfollow/unmute/unblock to a text button to follow/unfollow/unblock (unmuting is skipped for some reason), moved from alongside the user name to alongside the Posts/Followers/Following
  • changing the background color of the bio and stats part and getting rid of a separator between the bio and stats
  • changing the margins to have the profile picture eat on a few pixels of the header image instead of eating space below
• it also changes how account cards are used by:
  • only displaying one column in /web/directory instead of possibly multiple columns of accounts
  • using the account cards in /explore/suggestions
  • the bio section can be longer and respects line breaks

Overall it's an improvement, and the code seem ok, but I'm unsure why the “unmute” case was dropped.

Multi-line bios are also cropped very awkwardly:

Additionally, this feels cramped in some situations:

In particular in some languages:

[Gargron]

Fixed visual glitches caused by unnecessary padding. Added unmute button. Shortened unblock/unmute text.

[ClearlyClaire]

Still too cramped in some languages:

Otherwise, everything looks fine

[Gargron]

The counters now have a min. width that leaves enough space for French, the button shrinks and gets ellipsized.

[ClearlyClaire]

That's better, though the ellipsized button isn't ideal either :/