Add menu icons, update index numbers.

data.lua

@@ -16,35 +16,35 @@ function init_data()
       [3] = {
          replacement = 17,
          sfx = 13,
-         drop = 69
+         drop = 68
       },
 
       -- tree
       [4] = {
          replacement = 14,
          sfx = 11,
-         drop = 65
+         drop = 64
       },
 
       -- big mushroom
       [8] = {
          replacement = 16,
          sfx = 12,
-         drop = 66
+         drop = 65
       },
 
       -- cactus w/ flower
       [10] = {
          replacement = 15,
          sfx = 12,
-         drop = 68
+         drop = 67
       },
 
       -- cactus
       [13] = {
          replacement = 15,
          sfx = 12,
-         drop = 67
+         drop = 66
       }
    }