Sync translations with the code. Adjust translations for changed phrases
(hopefully correct for the most of them).
One phrase still left untouched (Preferences -> Downloading), need to
think on better wording.
Make squeeze labels (used for values on Information tab) display tooltip
on hover if their text doesn't fit. Make selective labels (same as in
GTK+ client) text selectable with keyboard in addition to mouse.
Prevent dialog width growth occured before to fit long error texts.
Mike Gelfand