Improve lobby list sorting and highlighting

[MrS-ibra]

Improves the lobby list experience
Changes:

• Fixed a bug where some friends lobbies were not being highlighted
• Replaced non functional "Sort by Name" with "Sort by Newest"
• Replaced non functional "Sort by Connection" with "Sort by Map" (default sort along with buddy sort)
• Passworded lobbies pushed below open lobbies
• Buddy lobbies are shown top when buddy sorting is enabled, even if passworded
• Removed full lobby grey out, full lobbies remain in the joinable lobbies section
• Player count highlight to indicate lobby statuse. turns green at 60% full, red when full
• Alternating row lobby colors for readability
• Removed unused IsLobbyJoinable function