Updated to "SteamVR 2.0" - supporting input mapping for all input types.

Sorry to everyone experiencing the game-breaking laser pointer issues, it should be resolved.

Other changes:

• Lowered volume of objective progress sound
  
• Added objective progress indicator for Store 1 objective 4
  
• Restored music to all levels to what they are in the mobile game
  
• Added delete progress button to the main hub
  
• No longer use indicators for controls in tutorial as they may be changed
  
• Updated unity version*

*this may fix issues some have had getting objective 2 in Office 3, I have had no control over the consistency of awarding the star.