Switch mod+m and mod+shit+m

The action behind +Shift version is more common; make it easier to use.

dotfiles/i3/config

 bindsym $mod+Shift+f        exec thunar
 bindsym $mod+Shift+o        exec "urxvt -e mocp"
 
-bindsym $mod+m              exec "i3-dmenu-desktop --dmenu='saturnin dmenu'"
-bindsym $mod+Shift+m        exec "saturnin conf -j -S -s dmenu.item | saturnin dmenu --split = | bash -"
+bindsym $mod+m              exec "saturnin conf -j -S -s dmenu.item | saturnin dmenu --split = | bash -"
+bindsym $mod+Shift+m        exec "i3-dmenu-desktop --dmenu='saturnin dmenu'"
 bindsym $mod+p              exec "dmenu_path | saturnin dmenu | bash -"
 bindsym $mod+Shift+p        exec "cat .dmenu_history | saturnin dmenu | tee -a .dmenu_history | bash -"