Glitches Removed

Fixed store freezing up.

 - Remember that store glitch I thought I fixed earlier today? It popped back up, and I fixed it for real this time.

- This was caused by those little text boxes that say like "+40" when you collect a jewel. Basically, they turned invisible and were blocking the mouse from being able to click the buttons.

Fixed powerup exploit.

 -I also fixed a glitch where if you paused the game with a powerup, it turned into an infinite never-ending powerup.

UI Improved

Fixed stretching: Circular buttons and icons should stay circular now no matter what the screen size is.