Update libfm.conf and pcmanfm.conf

etc/xdg/lubuntu/libfm/libfm.conf

@@ -1,13 +1,14 @@
 [config]
-single_click=1
+single_click=0
 use_trash=1
 confirm_del=1
+terminal=lxterminal %s
 thumbnail_local=1
 thumbnail_max=2048
 
 [ui]
 big_icon_size=48
 small_icon_size=24
-thumbnail_size=128
 pane_icon_size=24
+thumbnail_size=128
 show_thumbnail=1

usr/share/lubuntu/pcmanfm/pcmanfm.conf

@@ -0,0 +1,20 @@
+[config]
+bm_open_method=0
+su_cmd=gksu %s
+
+[desktop]
+wallpaper_mode=1
+wallpaper=/usr/share/lubuntu/wallpapers/lubuntu-default-wallpaper.png
+desktop_bg=#000000
+desktop_fg=#ffffff
+desktop_shadow=#000000
+
+[ui]
+always_show_tabs=0
+hide_close_btn=0
+win_width=798
+win_height=547
+view_mode=0
+show_hidden=0
+sort_type=0
+sort_by=0