vifm: Add batch file modification shortcut

Use `,r` to enter an $EDITOR instance in which you can
rename/delete/modify the files in the current directory. (using vidir
program under the hood)

terminal/.config/vifm/vifmrc

@@ -322,6 +322,9 @@ noremap ,pc :!pdftk %f cat output output.pdf
 nnoremap ,t :!vifm-thumbnailer -t %u %c<cr>
 nnoremap ,T :!vifm-thumbnailer -r -t %u %c<cr>
 
+" batch rename or delete files in current dir
+nnoremap ,r :!vidir<cr>
+
 " allows preview to work for normal view and single pane view
 noremap <silent> w : if layoutis('only')
                    \|     if &lines + 50 < &columns | vsplit | else | split | endif