Uninstaller leaves behind artefacts

[intelliant01]

Observation

Uninstall leaves behind the C:\Python34 directory and the related KOLIBRI_SCRIPT_DIR's value in the System Path variable.

Expected Behaviour

Ideally, a user must be notified of the same during uninstallation as is notified to install Python during installation. One should be given an option to auto-clean the installed Python because the user may actually be not using it for anything else.

However, if they choose to keep it then replace the %KOLIBRI_SCRIPT_DIR%' string with its value in the Path. (Herein I am assuming that the modification will be made to add %KOLIBRI_SCRIPT_DIR% instead of the currently added value to the Path variable as I have suggested in #161.

Consequences

A non-technical user will most likely just be cluttering their system with such residual artefacts.

[intelliant01]

This may be considered along with #118 .