Map chair skill + Hired Merchant fix

Changed map chair bonus healing mechanic to be a player skill, instead of promptly available for all players (healing buff takes place only if the player has the skill). Hired Merchant now properly checks for a space on the inventory before permitting a player to buy an item/bundle. Minor fix with concurrency on MapleStorage.

build/built-jar.properties

@@ -1,4 +1,4 @@
-#Wed, 18 Oct 2017 15:51:18 -0200
+#Sun, 22 Oct 2017 00:39:49 -0200
 
 
 C\:\\Nexon\\MapleSolaxia\\MapleSolaxiaV2=