Chambers update: new tutorial, crosshairs, widescreen support

• New tutorial level
  
• Crosshairs for your guns on low difficulty level
  
• Widescreen support and dual monitor tweaks
  
• Loading screen now shows some info on loading location
  
• Achievements fixes
  
• Localization fixes, added turkish and Italian
  
• Train driver spawn fix
  
• Lotta small fixes and tweaks