Messy uninstallation of the standalone installer

[qgib]

Author Name: Jean-Roc Morreale (@Jean-Roc)
Original Redmine Issue: 2977

Redmine category:build/install

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When uninstalling the standalone exe for 1.5.0, the software lefts the shortcut on the desktop. As it is useless without QGIS it should be removed.

The user should also have the option to uninstall the OSGEO4W folder and the .qgis folder.

This way QGIS leave a clean system behind it and make it easier to make a fresh install.

[qgib]

Author Name: Jean-Roc Morreale (@Jean-Roc)

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Forget the OSGEO4W part, bad idea :p

[qgib]

Author Name: Paolo Cavallini (@pcav)

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Still true?

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• pull_request_patch_supplied was configured as 0
• assigned_to_id removed nobody
• status_id was changed from Open to Feedback

[qgib]

Author Name: Alexander Bruy (@alexbruy)

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Still true with standalone 1.7.2

[qgib]

Author Name: Alexander Bruy (@alexbruy)

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Should be fixed in 018eda5

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• status_id was changed from Feedback to Closed
• resolution was changed from to fixed