Fix item tooltip and timers when they are moved (Issue 1498 & 1500)

[Jhobean]

THis PR fix 2 issue #1498 and #1500

I hesitate to send a FULL tooltip each time we move an item but it's the only solution I found. It's on the Event_Item_Drop method so it should only be active when player manually move item.

Edit: if require, send tooltip only on stacked item?