New experimental video modes

I have added two new experimental graphics modes to the game's Beta branch.
Under the Advanced Options there are now three choices for View Port:

• 424x240 - The original internal resolution. Okay for scaling to any 16:9 display size.
  
• 480x270 - A larger view window. Should scale perfectly to 1080p 16:9 displays.
  
• 360x270 - A 4:3 mode for those rocking this aspect ratio.
  

If anyone wants to give these new modes a try, especially the 4:3 one, please be my guest.
Other beta branch changes are:
(RC5A53)

• Belle can no longer get stuck between blast doors.
  
• Sinclair boss fight doors slam down before the start of the fight.
  
• Added languages indication to pause menu. It's grayed out during gameplay, but lets players know language can be changed.
  
• General pause menu fixes.
  
• Added (c) notice to the title screen.
  

(RC5A54)

• Minor fixes.
  
• Added DLC hooks. The new scenarios should plug right in once complete.
  

The Beta branch password is "nowheretorun"