Christmas games Bubble shooter

Nov 6, 2015

- Adding the board "Hard" - baubles slowly fall down, bit up 30 rows of balls and you win. The board "Hard" are the new 2 sets of balls, different background and music. This time the Christmas retro.
- Ability to turn off the music or sounds
- When capturing an elf, a mirror image is no longer work can be heard in the background sound (murmur Santa Claus). This is the sound a warning before the end of the mirror.
- Use the exit from the game in the main menu
- Code optimization