gajim.sh --> gajim.py, adding psyco support if available, small fix in new message dialog if @ is not given

ImageCellRenderer has now better name, gajim.py --> gajim.sh [needs fix to makefile to make it work, padding and xalign trying to clean up (don't work yet). added a fixme in new message dialog about focus problems..

when we change the iconset, change all the icons (in the roster, in the status combobox, in the systray, in (group)chat windows)

on_preferences_window_show makes sure always first tab is active, adding more status iconsets and fixed code, draw_roster doesnt update them very well and organized

Although, systray should be access only by a set of method to prevent those
type of things..

adding more preset status msgs. I want to be able to sort them. it don't understand why it doesn't seem to happen

add_jid remove_jid is better coded like that. removal of systrayDummy class [have a look and we can discuss], also have a look at a FIXME, back to detection of http://b) with ) in it, cause http://be?b)b can be valid url

fix some problems with drag and drop when we merge accounts