Use xcfe4-terminal on Shift+Return

Forget about tabbed mode in urxvt

dotfiles/i3/config

@@ -151,7 +151,7 @@ bar {
 
 ### MINE
 bindsym $mod+Return         exec "urxvt"
-bindsym $mod+Shift+Return   exec "urxvt -pe 'default,tabbed'"
+bindsym $mod+Shift+Return   exec "xfce4-terminal"
 bindsym $mod+b              exec "ub"
 bindsym $mod+Shift+b        exec "saturnin conf -j -S www.conf | saturnin dmenu -l 20 --split = | xargs -r ub"
 bindsym $mod+Shift+f        exec thunar