Haunted House is haunted - version 0.3

A lot of minor changes for better user experience, and preparing the code to take some major changes in the future. Some of the changes that are included in this version:

• Remapped some keys
• Now there are two separated actions to expel ghosts and pick up items
• Item pick-up has no cooldown
• Added magic wand model in-game
• Added in-game UI with cooldown bar
• Added fullscreen option
• Added preview for testing mouse sensitivity in options menu
• Volume slider now works
• Added 2 new maps that will be played at random from mission 2, or anytime in Free ride