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.

docs/feature_list.md

@@ -102,6 +102,8 @@ Server potentials:
 * Enhanced buff system: smartly checks for the best available buff effects to be active on the player.
 * Enhanced AP auto-assigner: exactly matches AP with the needed for the player's current level, surplus assigned to the primary attribute.
 * Channel capacity bar functional and world servers with max capacity checks.
+* Disease status are now visible for other players, even when changing maps.
+* Poison damage value are now visible for other players.
 * Mastery book announcer displays droppers of needed books of a player, by reading underlying DB.
 * Custom jail system (needs provided custom wz).
 * Delete Character (requires ENABLE_PIC activated).
@@ -139,6 +141,7 @@ External tools:
 Project:
 
 * Organized project code.
+* Highly updated drop data.
 * Highly configurable server (see all server flags at ServerConstants).
 * Fixed/added some missing packets for MoveEnvironment, summons and others.
 * Reviewed many Java object aspects that needed concurrency protection.