Fix up some minor issues with the special node editing dialog

- Also: merge "nuke monsters" and "destroy monster" nodes, since the action of the "destroy monster" node isn't what it sounds like; now it simply destroys a single monster on a specific space

rsrc/strings/specials-text-once.txt

@@ -142,35 +142,35 @@ Special if item IS taken
 Unused
 Special to Jump To
 --------------------
-Give Item (Terrain pic)
-Stuff Done Flag Part A
-Stuff Done Flag Part B
-Number of first message in dialog
-Num. of spec. item to give (-1 none)
+Unused Node
+Unused
+Unused
+Unused
+Unused
+Unused
+Unused
+Unused
+Unused
+Unused
 Unused
-Terrain Picture number
 Unused
-Item to give
-Amount of gold to give
 Unused
-Amount of food to give
-Special if item IS taken
 Unused
 Special to Jump To
 --------------------
-Give Item (Monster pic)
-Stuff Done Flag Part A
-Stuff Done Flag Part B
-Number of first message in dialog
-Num. of spec. item to give (-1 none)
+Unused Node
+Unused
+Unused
+Unused
+Unused
+Unused
+Unused
+Unused
+Unused
+Unused
 Unused
-Monster Picture number
 Unused
-Item to give
-Amount of gold to give
 Unused
-Amount of food to give
-Special if item IS taken
 Unused
 Special to Jump To
 --------------------