Update Windows OS detection

Add functions:
  beef.os.isWinCE()
  beef.os.isWin2000SP1()
  beef.os.isWindows()
Add 'beef.hardware.cpuType()'
Add virtual machine icon to browser
'BeEF::Core::Models::BrowserDetails::hw_icon()'
Fix typos in 'beef.hardware.cpuType()' and OS detection
Add CPU type to browser initialization

Add support for Firefox 19
Add laptop icon
Add 'beef.hardware.isLaptop()'