Chatroom setting GUI layout
ChatroomSetPane: read default value from SettingTable, update todo list
all default values of setting window are from SettingTable now
ChatroomSetPane, IRCSetPane: add load() function to read profile from
SettingTable
include a font chooser NwFontChooserS, ChatroomSetPane: options are
available now, save options when press save button
include GPL licence