Optionally more aggressive sanitizing

* Added AggressiveSanitize constant, it's a number to allow for different
  levels in the future. Default 0 (off)
* Added Skipping for GUID & Namemap in aggressive sanitize mode.
* If AggressiveSanitize is non zero, also sanitize query exports.
* Append [Number] of objects exported to information lines in immediate window.
* Updated readme (removed references to terminal / popup window).