Fix for crashing gnome-control-center

The GNOME control center in my Manjaro system crashed while I was tweaking the details of the mouse settings. After it crashed, I was unable to bring it up again even after a reboot.

The solution was to reset the configuration files for it using the following command:

$ dconf reset -f /org/gnome/control-center/

After that, the control center UI is up and running again. Based on the search hits, visiting the details pane can sometimes caused the state that results to a segmentation fault whenever the control center initializes.