User Manual updates
User Manual updates

* The portable mode is now active again, no need to describe it as not
  functional.

* Added Juan Carlos Paco to list of contributors.

tempbottle/Nuitka,tempbottle/Nuitka,tempbottle/Nuitka,wfxiang08/Nuitka,tempbottle/Nuitka,kayhayen/Nuitka,kayhayen/Nuitka,kayhayen/Nuitka,wfxiang08/Nuitka,wfxiang08/Nuitka,kayhayen/Nuitka,wfxiang08/Nuitka