Minor new additions for v20 (#147)

* Moved TMs/ TRs and HMs into their own handlers
* Improved Plugin Error Message
* Added sound effect when picking berries
* Allow player to always see quantity when buying items
* Trainers now require a Mega Ring item in their items (in trainers.txt) to Mega Evolve

Data/Scripts/019_Utilities/001_Utilities.rb

@@ -421,10 +421,8 @@ end
 def pbMoveTutorChoose(move, movelist = nil, bymachine = false, oneusemachine = false)
   ret = false
   move = GameData::Move.get(move).id
-  if movelist != nil && movelist.is_a?(Array)
-    movelist.length.times do |i|
-      movelist[i] = GameData::Move.get(movelist[i]).id
-    end
+  if movelist.is_a?(Array)
+    movelist.map! { |m| GameData::Move.get(m).id }
   end
   pbFadeOutIn {
     movename = GameData::Move.get(move).name