(qt) remove unused Torrent field 'torrentFile'

git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@13892 f4695dd4-2c0a-0410-b89c-da849a56a58e
(qt) #5252: disable file editing in the options dialog. remove keyboard shortcuts that conflicted with renaming files in file-tree.c. fix refresh issue in the file-tree when renaming files.

git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@13893 f4695dd4-2c0a-0410-b89c-da849a56a58e
(qt) more futzing with file-tree

git-svn-id: svn://svn.transmissionbt.com/Transmission/trunk@13894 f4695dd4-2c0a-0410-b89c-da849a56a58e