Use tr_torrentRenamePath() instead of the removed tr_torrentRename()

git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@13845 f4695dd4-2c0a-0410-b89c-da849a56a58e
Move the rename menu item to the File menu.

git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@13846 f4695dd4-2c0a-0410-b89c-da849a56a58e