[Cyberduck-localization] Update panel in Preferences

[David V. Kocher]

I have made the 'Software Update' configuration in the Preferences a  
item on its own. Two new strings can be found in Preferences.strings  
(Please download from http://svn.cyberduck.ch/trunk/)!

/* NSButton (Check for Update Now) : <title:Check for Update Now>  
(oid:1381) */
"Check for Update Now" = "Check for Update Now";

/* NSTabViewItem : <title:Software Update> (oid:1376) */
"Software Update" = "Software Update";

Thanks for updating your localization!
~David