Server listing re-org

[Southclaws]

The server listing frontend code could do with the same treatment as the forum code.

• Shove it in a directory
• Split out into components
• Pull requests into hooks
  • We need some mutation hooks
  • The API currently doesn't have any mutations for servers, we should add one as well as a middleware for MustOwnServer to assert the requesting cookie is from a user who owns the server being mutated.
• Update the styling to match the forum
  • Ordered/UnorderedList and ListItem are used a lot with the same style, they should be pulled out into generic list components for use with: server list, thread list, post list, member list, etc...