Desktop shortcuts

[MerlinTheGreat]

Thanks for this great software.
I would like to make a request for the update options.

One can select to delete the shortcuts after installation, BUT... the existing shortcuts also vanish. 
Could you add the option to keep the existing shortcuts and only delete the new ones.
That way the desktop stays intact like it was set up by the user/administrator. 

This should be fairly easy to implement.

• If the flag to keep existing shortcuts is set, do the following:
  
  
  
  • Just before the installation, check for an existing shortcut on the user desktop and the public desktop. If it exists, don't take the flag to delete the shortcuts into account.
    
• If the flag to keep existing shortcuts is NOT set, do the following:
  
  
  
  • If the flag to delete shortcuts is set, delete the shortcut.