Fix Update #1

A few fixes, after some feedbacks by our players:

• The player is less slowed down by the weight of what he is carrying
• Most of the items to burn have a shorter duration, in order to spice things up (as it was nearly impossible to have the fire stop before)
• The mushrooms effect duration is fixed (it could last for 5 minutes before, now it won't last for that long)
• Now the Logs.txt file is no longer generated by the execution of the game :)