Multi World NPCs + patch on Player interactions

Made NPCs now work properly on multiworld system. Solved multiple issues
regarding Player Shops not giving back items properly when owner exits.
Added restriction on changing channels at FM rooms, preventing shop
owner entering Cash Shop.

scripts/npc/2022004.js

@@ -0,0 +1,12 @@
+function start() {
+    cm.sendNext("You did a great job back there, " + cm.getPlayer().getName() + ", well done. Now I will transport you back to El Nath. Have the pendant in your possession and talk to me when you feel ready to receive the new skill.");
+}
+
+function action(mode, type, selection) {
+    if (mode == -1) {
+        cm.dispose();
+    } else {
+        cm.warp(211000000,"in01");
+        cm.dispose();
+    }
+}