Added the "autumn" terrain group to the map editor,

...since there is no longer a problem with displaying a lot of terrain groups.

data/core/editor/terrain-groups.cfg

@@ -5,6 +5,7 @@
 # Icon is the button icon name.
 
 #The all entry shows all terrains and must be available
+#TODO
 [editor_group]
     id=all
     name= _ "all"
@@ -46,6 +47,13 @@
     core=yes
 [/editor_group]
 
+[editor_group]
+    id=autumn
+    name= _ "autumn"
+    icon="group_autumn"
+    core=yes
+[/editor_group]
+
 [editor_group]
     id=frozen
     name= _ "frozen"

data/core/terrain.cfg

@@ -185,7 +185,7 @@
     editor_name= _ "Leaf Litter"
     string=Gll
     aliasof=Gt
-    editor_group=flat
+    editor_group=flat,autumn
 [/terrain_type]
 
 #    ## Roads ##
@@ -538,7 +538,7 @@
     default_base=Gd
     aliasof=_bas,Ft
     mvt_alias=-,_bas,Ft
-    editor_group=forest
+    editor_group=forest, autumn
 [/terrain_type]
 
 [terrain_type]
@@ -550,7 +550,7 @@
     default_base=Gs
     aliasof=_bas,Ft
     mvt_alias=-,_bas,Ft
-    editor_group=forest
+    editor_group=forest, autumn
 [/terrain_type]
 
 [terrain_type]
@@ -586,7 +586,7 @@
     default_base=Gll
     aliasof=_bas,Ft
     mvt_alias=-,_bas,Ft
-    editor_group=forest
+    editor_group=forest, autumn
 [/terrain_type]
 
 [terrain_type]
@@ -598,7 +598,7 @@
     default_base=Gd
     aliasof=_bas,Ft
     mvt_alias=-,_bas,Ft
-    editor_group=forest
+    editor_group=forest, autumn
 [/terrain_type]
 
 [terrain_type]
@@ -735,7 +735,7 @@
     string=Hhd^Fdf
     aliasof=Hh,Ft
     mvt_alias=-,Hh,Ft
-    editor_group=forest, rough
+    editor_group=forest, rough, autumn
 [/terrain_type]
 
 [terrain_type]
@@ -746,7 +746,7 @@
     string=Hhd^Fdw
     aliasof=Hh,Ft
     mvt_alias=-,Hh,Ft
-    editor_group=forest, rough
+    editor_group=forest, rough, autumn
 [/terrain_type]
 
 [terrain_type]
@@ -779,7 +779,7 @@
     string=Hhd^Fmf
     aliasof=Hh,Ft
     mvt_alias=-,Hh,Ft
-    editor_group=forest, rough
+    editor_group=forest, rough, autumn
 [/terrain_type]
 
 [terrain_type]
@@ -790,7 +790,7 @@
     string=Hhd^Fmw
     aliasof=Hh,Ft
     mvt_alias=-,Hh,Ft
-    editor_group=forest, rough
+    editor_group=forest, rough, autumn
 [/terrain_type]
 
 [terrain_type]