use kbd_input.png (previously rename.png) for rename menuitems in roster;better names for making menus methods in roster;add (comment out though as it has a problem) rename for transport

[jim++] use message text if user does not give message title. message == preset message [in prefs window]

mention menuitem by name [so refactoring does not break code]; fix sensitivy of history to be disabled for transports

msg window alignment is back now with corrected top padding so tab does not touch the window wm titlebar

do not play sound on recv chatstates. also comment on this so at last that code is somehow readable. thx Jim for report

chatstates handling is back again. now with comment why this should stay where it is. also do and if-if a if-elif [thanks Jim for this]