Added the custom terrains of DiD and UtBS into the editor...

...as their own editor groups, and added generic custom group button
graphics.

data/campaigns/Descent_Into_Darkness/_main.cfg

@@ -51,3 +51,12 @@
 {campaigns/Descent_Into_Darkness/scenarios}
 
 #endif
+
+#ifdef EDITOR
+[editor_group]
+    id=did
+    name= _ "Descent into Darkness"
+    icon="group_custom"
+[/editor_group]
+{campaigns/Descent_Into_Darkness/utils/terrain.cfg}
+#endif

data/campaigns/Descent_Into_Darkness/utils/terrain.cfg

@@ -8,5 +8,6 @@
     no_overlay=false
     recruit_onto=false
     recruit_from=false
+    editor_group=did
 [/terrain]
 {TERRAIN_BASE xx flat/road}

data/campaigns/Under_the_Burning_Suns/_main.cfg

@@ -121,3 +121,14 @@
 {campaigns/Under_the_Burning_Suns/scenarios}
 
 #endif
+
+#ifdef EDITOR
+[editor_group]
+    id=utbs
+    name= _ "Under the Burning Suns"
+    icon="group_custom"
+[/editor_group]
+{campaigns/Under_the_Burning_Suns/utils/adjacent_custom.cfg}
+{campaigns/Under_the_Burning_Suns/utils/terrain.cfg}
+{campaigns/Under_the_Burning_Suns/utils/terrain_graphics.cfg}
+#endif

data/campaigns/Under_the_Burning_Suns/utils/terrain.cfg

@@ -11,6 +11,7 @@
     #char=%
     string=Ryd
     aliasof=Rr
+    editor_group=utbs
 [/terrain]
 
 {TERRAIN_BASE_PROB            Ryd dark_tile1   50}
@@ -30,6 +31,7 @@
     def_alias=-,Uu,Ql
     submerge=0.4
     unit_height_adjust=-4
+    editor_group=utbs
 [/terrain]
 
 {TERRAIN_BASE Yl lava}
@@ -57,6 +59,7 @@
     aliasof=Mm
     heals=false
     gives_income=true
+    editor_group=utbs
 [/terrain]
 
 {TERRAIN_BASE Wyc coast}
@@ -70,6 +73,7 @@
     aliasof=Mm^Xm
     heals=false
     gives_income=false
+    editor_group=utbs
 [/terrain]
 
 {TERRAIN_OVERLAY_PROB Dd^Fi "" 100% ../scenery/fire1:200,../scenery/fire2:200,../scenery/fire3:200,../scenery/fire4:200,../scenery/fire5:200,../scenery/fire6:200,../scenery/fire7:200,../scenery/fire8:200}
@@ -85,6 +89,7 @@
     gives_income=false
     recruit_onto=true
     no_overlay=true
+    editor_group=utbs
 [/terrain]
 
 # phantom keep
@@ -99,6 +104,7 @@
     recruit_onto=true
     recruit_from=true
     no_overlay=true
+    editor_group=utbs
 [/terrain]
 
 {DISABLE_TRANSITIONS (Dd^Cd,Dd^Kd)}