desktop UI: autofocus textfield, link clicking
add: ability to set topic, dumphtml and loadhtml for debug
fix: CommandParser now uses ServerModel for join and query
fix: IrcModel channel lookup is now case-insensitive
add: remove autojoin functionality in ServerSettings
fix: remove autojoin when parted channel, errors go to current channel,
switch to channel when joined
fix: channel name ordering is now case-insensitive