Ticking 'Search in all namespaces' in prefs should disable other checkboxes

Ticking 'Search in all namespaces' will disable all other checkboxes
below. They will regain their original state once it is unticked.

Bug: 60285
Change-Id: Ie62b9186e98dd770de4282ea57d7248158a6e782
Merge "Ticking 'Search in all namespaces' in prefs should disable other checkboxes"