Add market to autosave

Add fast equip - now player is able to use (right click when in hand) all equipable items to equip them.

Fix skilling distance fighting on npc

Fix area spells and effects destroying cactuses

Fix bug with destroy field not always destroying block

Fix bug causing player unable to put ammunition to ammunition slot after shoot last arrow/bolt

Fix info about last arrow/bolt shooted not displaying

Fix bug causes unable to stack ammunition

Improve burst arrows - now explodes even if hit block

Improve mobs invisibility - now player can break mobs invisible by deal damage

Improve capacity displaying in /stats command - now display left capacity (like in sidebar)

Optymalize and improve ItemMeta* classes

Optymalize and improve items giving mechanism

Optymalize some spells

Code refactoring