[ Fix and little update ]

Hello ! 

Just a small and quick update to change the design of the dice so it's more easy to understand what it gives you.

I also fixed some bugs that were reported during the GMTK :

• Clicking to place an object before the die finishes rolling always place the 1x1 ground tile.  [FIXED]
• The dice UI element was almost completely off the screen on some levels. [FIXED]
• The timer doesn't stop when you reach the end of the level. [WILL BE FIXED SOON]

Bye !