Horntail PQ & Exped + Equip levelup fix

Added Horntail PQ and boss fight. Fixed short integer overflow of
equipment stats on client messing up player stats.

scripts/portal/nets_in.js

@@ -0,0 +1,5 @@
+function enter(pi) {
+	pi.saveLocation("MIRROR");
+	pi.warp(926010000, 0);
+	return true;
+}