pot/po update (update nb). translators plz look in wiki for how to check accels and other stuff before supplying your transl

with the other dialogs

using comments and Q_() for make disctioning of None and Unknown strings. this breaks strings freeze but I hope it is for the good and I hope it is the last time [sorry ppl]

gajim is running on the same ft port

selection with keyboard reflects on sensitivity
of the buttons