Inventory Helper Extended

• fixed issue with creating neccessary folders with MyWorlds/Multiverse-Core
• added MD5-Cechksum to prevent manually editing saved inventories
• added PlayerJoinEvent to full reward the saved inventory if exists
• support in 1.7.2-R0.3 and 1.7.9-R0.1

Commands and permissions not useable at this moment!
Support to save up to 5 different inventory files due to emergency reward if smth. goes realy wrong with your players inventories :).