Remove most trailing newlines from translated messages.

They are a hassle for translators and reviewers alike.

Change-Id: I07c1b61e8b6719e54fdc1f69cf63f573119a6776
Reviewed-by: hjk <hjk121@nokiamail.com>
Reviewed-by: Robert Loehning <robert.loehning@digia.com>
Reviewed-by: Eike Ziller <eike.ziller@digia.com>