Tutorial: move from title screen to campaign menu

data/campaigns/tutorial/_main.cfg

@@ -6,6 +6,31 @@
 
 # wmlscope: set export=no
 
+[campaign]
+    id=Tutorial
+    name= _ "Battle Training"
+    icon="data/campaigns/tutorial/images/units/quintain.png~RC(magenta>blue)"
+    image="data/campaigns/tutorial/images/units/quintain.png~RC(magenta>blue)~XBRZ(4)"
+    abbrev= _ "Tutorial"
+    rank=1
+    # put it last when sorted by date
+    year="9999 AF"
+    define=TUTORIAL
+    first_scenario=tutorial
+    description= _ "Learn the basics of Wesnoth gameplay with a tutorial."
+    [difficulty]
+        # The difficulty-select dialog won’t be shown to the player, as there's
+        # only one difficulty. However, if the [campaign] tag doesn't include
+        # it then a silver instead of gold laurel will be shown in the
+        # campaigns menu. The label and description will be shown in the
+        # load-game dialog.
+        define=NORMAL
+        default=yes
+        label= _ "Tutorial"
+        description= _ "Beginner"
+    [/difficulty]
+[/campaign]
+
 #ifdef TUTORIAL
 [binary_path]
     path=data/campaigns/tutorial

data/gui/window/title_screen.cfg

@@ -248,7 +248,6 @@ where
 		definition = "box_display"
 
 		[grid]
-			{_GUI_BUTTON "tutorial" _"Tutorial" _"Start a tutorial to familiarize yourself with the game"}
 			{_GUI_BUTTON "campaign" _"Campaigns" _"Start a new single player campaign"}
 			{_GUI_BUTTON "multiplayer" _"Multiplayer" _"Play multiplayer (hotseat, LAN, or Internet), or a single scenario against the AI"}
 			{_GUI_BUTTON "load" _"Load" _"Load a saved game"}