Poison/slow update + Map-persistent diseases + Selling zero-qty rechs.

Rebalanced CafePQ rewards.
Rebalanced drop chance of some equipments and HT drops with high rates.
Fixed an weird issue where a "Targa hat" would appear as a debuff effect.
Added visual effect to be displayed to other players when the custom "Chair Mastery" skill is being used.
Slow disease is now visible to other players.
Poison damage now displays the correct damage amount to other players.
Disease status are now visible for other players when changing maps.
Fixed recharging price being accounted incorrectly.
Fixed zero-quantity rechargeables not being able to sell at NPC shops.

src/net/server/worker/CharacterDiseaseWorker.java

@@ -0,0 +1,33 @@
+/*
+    This file is part of the HeavenMS (MapleSolaxiaV2) MapleStory Server
+    Copyleft (L) 2017 RonanLana
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as
+    published by the Free Software Foundation version 3 as published by
+    the Free Software Foundation. You may not use, modify or distribute
+    this program under any other version of the GNU Affero General Public
+    License.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+package net.server.worker;
+
+import net.server.Server;
+
+/**
+ * @author Ronan
+ * @info   Thread responsible for announcing other players diseases when one enters into a map
+ */
+public class CharacterDiseaseWorker implements Runnable {
+    @Override
+    public void run() {
+        Server.getInstance().runAnnouncePlayerDiseasesSchedule();
+    }
+}