ui: Rearrange Menu menu items more logically

This changes the position of Statistics, Status Table and Unit List
according to their respective likelihood of being used and relabels the
Back to submenu to Load Turn and brings it right under Load Game.

data/themes/default.cfg

@@ -79,15 +79,15 @@
             id=menu-main
             title= _ "Menu"
             image=button_menu/menu_button_copper_H20
-            items=objectives,statistics,unitlist,statustable,save,savereplay,savemap,load,preferences,chatlog,menu-autosaves,help,stopnetwork,startnetwork,surrender,quit,quit-to-desktop
+            items=objectives,statustable,statistics,unitlist,load,menu-autosaves,save,savereplay,savemap,chatlog,preferences,help,stopnetwork,startnetwork,surrender,quit,quit-to-desktop
             ref=top-panel
             rect="=,=+1,+100,=-4"
             xanchor=fixed
             yanchor=fixed
         [/menu]
 
         [menu]
-            title= _ "Back to..."
+            title= _ "Load Turn..."
             id=menu-autosaves
             button=false
             items=AUTOSAVES,help-about-saveload