Issue #214: Crash from auto crash report system. (dismine/valentina)

New issue 214: Crash from auto crash report system. https://bitbucket.org/valentinateam/valentina/issue/214/crash-from-auto-crash-report-system

Roman Telezhinskyi:

If select tool and then delete another point program will crash. Because tool was not canceled visualization was not deleted from scene before full parsing. After full parsing we canceled tool and tool try delete already deleted visualization. This crash program.

This issue have all tools that have visualization.