resize the rename dialogue buttons for different localizations

git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@13997 f4695dd4-2c0a-0410-b89c-da849a56a58e
(qt) #5284 'file tree should show the wanted size of the subtree, not the entire size': done.

git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@13998 f4695dd4-2c0a-0410-b89c-da849a56a58e
(gtk) #5284 'file tree should show the wanted size of the subtree, not the entire size': done.

git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@13999 f4695dd4-2c0a-0410-b89c-da849a56a58e