ReadShape Kindle Sync ავტორი ReadShape

Adds a "request permissions" dialog for Firefox users.

Previously some users might have gotten confused as to why the add-on wasn't working by default and that's because Firefox by default restricts add-on permissions for security purposes.

Now, if the add-on does not have the required permissions a notice will be shown to the user that they can interact with and grant the add-on the required permissions.