Safely remove previous tox identity

src/freedombone-image-mesh

 
 	echo $'Clearing toxic client settings' >> $INSTALL_LOG
 	if [ -d /home/${MY_USERNAME}/.config/tox ]; then
+		shred -zu /home/${MY_USERNAME}/.config/tox/*.tox
+		shred -zu /home/${MY_USERNAME}/.config/tox/*.db
+		shred -zu /home/${MY_USERNAME}/.config/tox/*.ini
 		rm -rf /home/${MY_USERNAME}/.config/tox
 	fi
 	echo $'toxic client configured' >> $INSTALL_LOG