Fixes #3229 Avoid restoring/clearing exceptions list when inserting

[keianhzo]

Fixes #3229 Avoid restoring/clearing exceptions list when inserting

[keianhzo]

@bluemarvin I've updated the PR to handle the exceptions persistence in a more straightforward way.

The whole point of using the lists diffs was being able to reuse the SitePermissionsOptionsView to handle all exceptions in the same way but it was making the tracking exceptions handling code confusing. I've added a specific TrackingPermissionsOptionsView so we always update the tracking exceptions using the same methods and update the storage afterwards instead of needing to listen to the storage updates events. I think this makes more sense and also makes the code simpler and easier to understand.