rewrite member list

[ouwou]

why:

• less memory (many widgets = 😿)
• channel switching faster (>800 new widgets, >400 sql queries = slow 😡)

• [ ] roles
  • [ ] icons?
  • [ ] collapsible?
• [ ] members
  • [ ] sorting
  • [ ] avatars
    • [ ] on first draw?
    • [ ] animated?
• [ ] colors
• [ ] menu
• [ ] make the sql better
• [ ] styling (styleproperties)
• [ ] test in:
  • [ ] dm
  • [ ] group dm
  • [ ] channel
  • [ ] thread